diff --git a/app/build.gradle b/app/build.gradle
index a2bac220..0545a964 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -83,8 +83,11 @@ dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 
     implementation 'commons-io:commons-io:2.6'
+    implementation 'io.github.novacrypto:BIP39:2019.01.27'
 
-    implementation "androidx.core:core-ktx:1.0.2"
+    implementation 'androidx.core:core-ktx:1.0.2'
     implementation 'androidx.preference:preference-ktx:1.0.0'
+    implementation 'com.google.android.material:material:1.0.0'
     implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
 }
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index cce2844f..0bfb69e3 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -18,17 +18,21 @@
 
     <application
         android:name=".Backup"
-        android:supportsRtl="true"
-        android:theme="@style/AppTheme"
+        android:allowBackup="false"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
-        android:allowBackup="false"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme"
         tools:ignore="GoogleAppIndexingWarning">
 
         <activity
             android:name=".settings.SettingsActivity"
             android:exported="true" />
 
+        <activity
+            android:name=".settings.RecoveryCodeActivity"
+            android:label="@string/recovery_code_title" />
+
         <activity
             android:name="com.stevesoltys.backup.activity.MainActivity"
             android:label="@string/app_name">
diff --git a/app/src/main/java/com/stevesoltys/backup/LiveEvent.kt b/app/src/main/java/com/stevesoltys/backup/LiveEvent.kt
new file mode 100644
index 00000000..83aede27
--- /dev/null
+++ b/app/src/main/java/com/stevesoltys/backup/LiveEvent.kt
@@ -0,0 +1,35 @@
+package com.stevesoltys.backup
+
+import androidx.lifecycle.LifecycleOwner
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.Observer
+import com.stevesoltys.backup.LiveEvent.ConsumableEvent
+
+open class LiveEvent<T> : LiveData<ConsumableEvent<T>>() {
+
+    fun observeEvent(owner: LifecycleOwner, handler: LiveEventHandler<in T>) {
+        val observer = LiveEventObserver(handler)
+        super.observe(owner, observer)
+    }
+
+    class ConsumableEvent<T>(private val content: T) {
+        private var consumed = false
+
+        val contentIfNotConsumed: T?
+            get() {
+                if (consumed) return null
+                consumed = true
+                return content
+            }
+    }
+
+    internal class LiveEventObserver<T>(private val handler: LiveEventHandler<in T>) : Observer<ConsumableEvent<T>> {
+        override fun onChanged(consumableEvent: ConsumableEvent<T>?) {
+            if (consumableEvent != null) {
+                val content = consumableEvent.contentIfNotConsumed
+                if (content != null) handler.onEvent(content)
+            }
+        }
+    }
+
+}
diff --git a/app/src/main/java/com/stevesoltys/backup/LiveEventHandler.java b/app/src/main/java/com/stevesoltys/backup/LiveEventHandler.java
new file mode 100644
index 00000000..22d86af0
--- /dev/null
+++ b/app/src/main/java/com/stevesoltys/backup/LiveEventHandler.java
@@ -0,0 +1,5 @@
+package com.stevesoltys.backup;
+
+public interface LiveEventHandler<T> {
+    void onEvent(T t);
+}
diff --git a/app/src/main/java/com/stevesoltys/backup/MutableLiveEvent.kt b/app/src/main/java/com/stevesoltys/backup/MutableLiveEvent.kt
new file mode 100644
index 00000000..7086bd40
--- /dev/null
+++ b/app/src/main/java/com/stevesoltys/backup/MutableLiveEvent.kt
@@ -0,0 +1,13 @@
+package com.stevesoltys.backup
+
+class MutableLiveEvent<T> : LiveEvent<T>() {
+
+    fun postEvent(value: T) {
+        super.postValue(ConsumableEvent(value))
+    }
+
+    fun setEvent(value: T) {
+        super.setValue(ConsumableEvent(value))
+    }
+
+}
diff --git a/app/src/main/java/com/stevesoltys/backup/settings/RecoveryCodeActivity.kt b/app/src/main/java/com/stevesoltys/backup/settings/RecoveryCodeActivity.kt
new file mode 100644
index 00000000..0e737f94
--- /dev/null
+++ b/app/src/main/java/com/stevesoltys/backup/settings/RecoveryCodeActivity.kt
@@ -0,0 +1,55 @@
+package com.stevesoltys.backup.settings
+
+import android.os.Bundle
+import android.view.MenuItem
+import androidx.appcompat.app.AppCompatActivity
+import androidx.lifecycle.ViewModelProviders
+import com.stevesoltys.backup.LiveEventHandler
+import com.stevesoltys.backup.R
+
+class RecoveryCodeActivity : AppCompatActivity() {
+
+    private lateinit var viewModel: RecoveryCodeViewModel
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        setContentView(R.layout.activity_recovery_code)
+
+        viewModel = ViewModelProviders.of(this).get(RecoveryCodeViewModel::class.java)
+        viewModel.confirmButtonClicked.observeEvent(this, LiveEventHandler { clicked ->
+            if (clicked) {
+                val tag = "Confirm"
+                supportFragmentManager.beginTransaction()
+                        .replace(R.id.fragment, RecoveryCodeInputFragment(), tag)
+                        .addToBackStack(tag)
+                        .commit()
+            }
+        })
+        viewModel.recoveryCodeSaved.observeEvent(this, LiveEventHandler { saved ->
+            if (saved) {
+                setResult(RESULT_OK)
+                finishAfterTransition()
+            }
+        })
+
+        supportActionBar!!.setDisplayHomeAsUpEnabled(true)
+
+        if (savedInstanceState == null) {
+            supportFragmentManager.beginTransaction()
+                    .add(R.id.fragment, RecoveryCodeOutputFragment(), "Code")
+                    .commit()
+        }
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        return when {
+            item.itemId == android.R.id.home -> {
+                onBackPressed()
+                true
+            }
+            else -> super.onOptionsItemSelected(item)
+        }
+    }
+
+}
diff --git a/app/src/main/java/com/stevesoltys/backup/settings/RecoveryCodeAdapter.kt b/app/src/main/java/com/stevesoltys/backup/settings/RecoveryCodeAdapter.kt
new file mode 100644
index 00000000..cc4e009c
--- /dev/null
+++ b/app/src/main/java/com/stevesoltys/backup/settings/RecoveryCodeAdapter.kt
@@ -0,0 +1,37 @@
+package com.stevesoltys.backup.settings
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView.Adapter
+import com.stevesoltys.backup.R
+
+class RecoveryCodeAdapter(private val items: List<CharSequence>) : Adapter<RecoveryCodeViewHolder>() {
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecoveryCodeViewHolder {
+        val v = LayoutInflater.from(parent.context)
+                .inflate(R.layout.list_item_recovery_code_output, parent, false) as View
+        return RecoveryCodeViewHolder(v)
+    }
+
+    override fun getItemCount() = items.size
+
+    override fun onBindViewHolder(holder: RecoveryCodeViewHolder, position: Int) {
+        holder.bind(position + 1, items[position])
+    }
+
+}
+
+class RecoveryCodeViewHolder(v: View) : RecyclerView.ViewHolder(v) {
+
+    private val num = v.findViewById<TextView>(R.id.num)
+    private val word = v.findViewById<TextView>(R.id.word)
+
+    internal fun bind(number: Int, item: CharSequence) {
+        num.text = number.toString()
+        word.text = item
+    }
+
+}
diff --git a/app/src/main/java/com/stevesoltys/backup/settings/RecoveryCodeInputFragment.kt b/app/src/main/java/com/stevesoltys/backup/settings/RecoveryCodeInputFragment.kt
new file mode 100644
index 00000000..26918c49
--- /dev/null
+++ b/app/src/main/java/com/stevesoltys/backup/settings/RecoveryCodeInputFragment.kt
@@ -0,0 +1,104 @@
+package com.stevesoltys.backup.settings
+
+import android.os.Build
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.View.OnFocusChangeListener
+import android.view.ViewGroup
+import android.widget.Toast
+import android.widget.Toast.LENGTH_LONG
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.ViewModelProviders
+import com.stevesoltys.backup.R
+import io.github.novacrypto.bip39.Validation.InvalidChecksumException
+import io.github.novacrypto.bip39.Validation.WordNotFoundException
+import kotlinx.android.synthetic.main.fragment_recovery_code_input.*
+import kotlinx.android.synthetic.main.recovery_code_input.*
+
+class RecoveryCodeInputFragment : Fragment() {
+
+    private lateinit var viewModel: RecoveryCodeViewModel
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
+                              savedInstanceState: Bundle?): View? {
+        return inflater.inflate(R.layout.fragment_recovery_code_input, container, false)
+    }
+
+    override fun onActivityCreated(savedInstanceState: Bundle?) {
+        super.onActivityCreated(savedInstanceState)
+        viewModel = ViewModelProviders.of(requireActivity()).get(RecoveryCodeViewModel::class.java)
+
+        for (i in 0 until WORD_NUM) {
+            val wordLayout = getWordLayout(i)
+            wordLayout.editText!!.onFocusChangeListener = OnFocusChangeListener { _, focus ->
+                if (!focus) wordLayout.isErrorEnabled = false
+            }
+        }
+        doneButton.setOnClickListener { done() }
+
+        if (Build.TYPE == "userdebug") debugPreFill()
+    }
+
+    private fun getInput(): List<CharSequence> = ArrayList<String>(WORD_NUM).apply {
+        for (i in 0 until WORD_NUM) add(getWordLayout(i).editText!!.text.toString())
+    }
+
+    private fun done() {
+        val input = getInput()
+        if (!allFilledOut(input)) return
+        try {
+            viewModel.validateAndContinue(input)
+        } catch (e: InvalidChecksumException) {
+            Toast.makeText(context, R.string.recovery_code_error_checksum_word, LENGTH_LONG).show()
+        } catch (e: WordNotFoundException) {
+            showWrongWordError(input, e)
+        }
+    }
+
+    private fun allFilledOut(input: List<CharSequence>): Boolean {
+        for (i in 0 until input.size) {
+            if (input[i].isNotEmpty()) continue
+            showError(i, getString(R.string.recovery_code_error_empty_word))
+            return false
+        }
+        return true
+    }
+
+    private fun showWrongWordError(input: List<CharSequence>, e: WordNotFoundException) {
+        val i = input.indexOf(e.word)
+        if (i == -1) throw AssertionError()
+        showError(i, getString(R.string.recovery_code_error_invalid_word, e.suggestion1, e.suggestion2))
+    }
+
+    private fun showError(i: Int, errorMsg: CharSequence) {
+        getWordLayout(i).apply {
+            error = errorMsg
+            requestFocus()
+        }
+    }
+
+    private fun getWordLayout(i: Int) = when (i + 1) {
+        1 -> wordLayout1
+        2 -> wordLayout2
+        3 -> wordLayout3
+        4 -> wordLayout4
+        5 -> wordLayout5
+        6 -> wordLayout6
+        7 -> wordLayout7
+        8 -> wordLayout8
+        9 -> wordLayout9
+        10 -> wordLayout10
+        11 -> wordLayout11
+        12 -> wordLayout12
+        else -> throw IllegalArgumentException()
+    }
+
+    private fun debugPreFill() {
+        val words = viewModel.wordList
+        for (i in 0 until words.size) {
+            getWordLayout(i).editText!!.setText(words[i])
+        }
+    }
+
+}
diff --git a/app/src/main/java/com/stevesoltys/backup/settings/RecoveryCodeOutputFragment.kt b/app/src/main/java/com/stevesoltys/backup/settings/RecoveryCodeOutputFragment.kt
new file mode 100644
index 00000000..724cb5a1
--- /dev/null
+++ b/app/src/main/java/com/stevesoltys/backup/settings/RecoveryCodeOutputFragment.kt
@@ -0,0 +1,45 @@
+package com.stevesoltys.backup.settings
+
+import android.content.res.Configuration
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.ViewModelProviders
+import androidx.recyclerview.widget.GridLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import com.stevesoltys.backup.R
+import kotlinx.android.synthetic.main.fragment_recovery_code_output.*
+
+class RecoveryCodeOutputFragment : Fragment() {
+
+    private lateinit var viewModel: RecoveryCodeViewModel
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
+                              savedInstanceState: Bundle?): View? {
+        return inflater.inflate(R.layout.fragment_recovery_code_output, container, false)
+    }
+
+    override fun onActivityCreated(savedInstanceState: Bundle?) {
+        super.onActivityCreated(savedInstanceState)
+        viewModel = ViewModelProviders.of(requireActivity()).get(RecoveryCodeViewModel::class.java)
+
+        setGridParameters(wordList)
+        wordList.adapter = RecoveryCodeAdapter(viewModel.wordList)
+
+        confirmCodeButton.setOnClickListener { viewModel.onConfirmButtonClicked() }
+    }
+
+    private fun setGridParameters(list: RecyclerView) {
+        val layoutManager = list.layoutManager as GridLayoutManager
+        if (resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE) {
+            layoutManager.orientation = RecyclerView.VERTICAL
+            layoutManager.spanCount = 4
+        } else {
+            layoutManager.orientation = RecyclerView.HORIZONTAL
+            layoutManager.spanCount = 6
+        }
+    }
+
+}
diff --git a/app/src/main/java/com/stevesoltys/backup/settings/RecoveryCodeViewModel.kt b/app/src/main/java/com/stevesoltys/backup/settings/RecoveryCodeViewModel.kt
new file mode 100644
index 00000000..24743d84
--- /dev/null
+++ b/app/src/main/java/com/stevesoltys/backup/settings/RecoveryCodeViewModel.kt
@@ -0,0 +1,54 @@
+package com.stevesoltys.backup.settings
+
+import android.app.Application
+import android.util.ByteStringUtils
+import androidx.lifecycle.AndroidViewModel
+import com.stevesoltys.backup.LiveEvent
+import com.stevesoltys.backup.MutableLiveEvent
+import io.github.novacrypto.bip39.*
+import io.github.novacrypto.bip39.Validation.InvalidChecksumException
+import io.github.novacrypto.bip39.Validation.InvalidWordCountException
+import io.github.novacrypto.bip39.Validation.UnexpectedWhiteSpaceException
+import io.github.novacrypto.bip39.Validation.WordNotFoundException
+import io.github.novacrypto.bip39.wordlists.English
+import java.security.SecureRandom
+import java.util.*
+
+internal const val WORD_NUM = 12
+
+class RecoveryCodeViewModel(application: Application) : AndroidViewModel(application) {
+
+    internal val wordList: List<CharSequence> by lazy {
+        val items: ArrayList<CharSequence> = ArrayList(WORD_NUM)
+        // TODO factor out entropy generation
+        val entropy = ByteArray(Words.TWELVE.byteLength())
+        SecureRandom().nextBytes(entropy)
+        MnemonicGenerator(English.INSTANCE).createMnemonic(entropy) {
+            if (it != " ") items.add(it)
+        }
+        items
+    }
+
+    private val mConfirmButtonClicked = MutableLiveEvent<Boolean>()
+    internal val confirmButtonClicked: LiveEvent<Boolean> = mConfirmButtonClicked
+    internal fun onConfirmButtonClicked() = mConfirmButtonClicked.setEvent(true)
+
+    internal val recoveryCodeSaved = MutableLiveEvent<Boolean>()
+
+    @Throws(WordNotFoundException::class, InvalidChecksumException::class)
+    fun validateAndContinue(input: List<CharSequence>) {
+        try {
+            MnemonicValidator.ofWordList(English.INSTANCE).validate(input)
+        } catch (e: UnexpectedWhiteSpaceException) {
+            throw AssertionError(e)
+        } catch (e: InvalidWordCountException) {
+            throw AssertionError(e)
+        }
+        val mnemonic = input.joinToString(" ")
+        val seed = SeedCalculator(JavaxPBKDF2WithHmacSHA512.INSTANCE).calculateSeed(mnemonic, "")
+        // TODO use KeyManager to store secret
+        setBackupPassword(getApplication(), ByteStringUtils.toHexString(seed))
+        recoveryCodeSaved.setEvent(true)
+    }
+
+}
diff --git a/app/src/main/java/com/stevesoltys/backup/settings/SettingsActivity.kt b/app/src/main/java/com/stevesoltys/backup/settings/SettingsActivity.kt
index 9cc06890..3ffb4f4f 100644
--- a/app/src/main/java/com/stevesoltys/backup/settings/SettingsActivity.kt
+++ b/app/src/main/java/com/stevesoltys/backup/settings/SettingsActivity.kt
@@ -13,10 +13,13 @@ import android.widget.Toast.LENGTH_SHORT
 import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.ViewModelProviders
 import com.stevesoltys.backup.R
-import com.stevesoltys.backup.activity.MainActivity.OPEN_DOCUMENT_TREE_REQUEST_CODE
 
 private val TAG = SettingsActivity::class.java.name
 
+const val REQUEST_CODE_OPEN_DOCUMENT_TREE = 1
+const val REQUEST_CODE_RECOVERY_CODE = 2
+
+
 class SettingsActivity : AppCompatActivity() {
 
     private lateinit var viewModel: SettingsViewModel
@@ -31,9 +34,25 @@ class SettingsActivity : AppCompatActivity() {
         supportActionBar!!.setDisplayHomeAsUpEnabled(true)
     }
 
+    override fun onActivityResult(requestCode: Int, resultCode: Int, result: Intent?) {
+        if (resultCode != RESULT_OK) {
+            Log.w(TAG, "Error in activity result: $requestCode")
+            finishAfterTransition()
+        }
+
+        if (requestCode == REQUEST_CODE_OPEN_DOCUMENT_TREE) {
+            viewModel.handleChooseFolderResult(result)
+        }
+    }
+
     override fun onStart() {
         super.onStart()
-        if (!viewModel.locationIsSet()) {
+        if (isFinishing) return
+
+        // check that backup is provisioned
+        if (!viewModel.recoveryCodeIsSet()) {
+            showRecoveryCodeActivity()
+        } else if (!viewModel.locationIsSet()) {
             showChooseFolderActivity()
         }
     }
@@ -64,15 +83,9 @@ class SettingsActivity : AppCompatActivity() {
         }
     }
 
-    override fun onActivityResult(requestCode: Int, resultCode: Int, result: Intent?) {
-        if (resultCode != RESULT_OK) {
-            Log.w(TAG, "Error in activity result: $requestCode")
-            return
-        }
-
-        if (requestCode == OPEN_DOCUMENT_TREE_REQUEST_CODE) {
-            viewModel.handleChooseFolderResult(result)
-        }
+    private fun showRecoveryCodeActivity() {
+        val intent = Intent(this, RecoveryCodeActivity::class.java)
+        startActivityForResult(intent, REQUEST_CODE_RECOVERY_CODE)
     }
 
     private fun showChooseFolderActivity() {
@@ -82,7 +95,7 @@ class SettingsActivity : AppCompatActivity() {
         // TODO StringRes
         try {
             val documentChooser = createChooser(openTreeIntent, "Select the backup location")
-            startActivityForResult(documentChooser, OPEN_DOCUMENT_TREE_REQUEST_CODE)
+            startActivityForResult(documentChooser, REQUEST_CODE_OPEN_DOCUMENT_TREE)
         } catch (ex: ActivityNotFoundException) {
             Toast.makeText(this, "Please install a file manager.", LENGTH_LONG).show()
         }
diff --git a/app/src/main/java/com/stevesoltys/backup/settings/SettingsViewModel.kt b/app/src/main/java/com/stevesoltys/backup/settings/SettingsViewModel.kt
index df47f1c7..a49608f9 100644
--- a/app/src/main/java/com/stevesoltys/backup/settings/SettingsViewModel.kt
+++ b/app/src/main/java/com/stevesoltys/backup/settings/SettingsViewModel.kt
@@ -10,6 +10,7 @@ class SettingsViewModel(application: Application) : AndroidViewModel(application
 
     private val app = application
 
+    fun recoveryCodeIsSet() = getBackupPassword(getApplication()) != null
     fun locationIsSet() = getBackupFolderUri(getApplication()) != null
 
     fun handleChooseFolderResult(result: Intent?) {
diff --git a/app/src/main/res/layout/activity_recovery_code.xml b/app/src/main/res/layout/activity_recovery_code.xml
new file mode 100644
index 00000000..d64f58e8
--- /dev/null
+++ b/app/src/main/res/layout/activity_recovery_code.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/fragment"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" />
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_recovery_code_input.xml b/app/src/main/res/layout/fragment_recovery_code_input.xml
new file mode 100644
index 00000000..1442389a
--- /dev/null
+++ b/app/src/main/res/layout/fragment_recovery_code_input.xml
@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fillViewport="true">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        tools:context=".settings.RecoveryCodeInputFragment">
+
+        <ImageView
+            android:id="@+id/introIcon"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="16dp"
+            android:layout_marginTop="24dp"
+            android:src="@drawable/ic_info_outline"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            tools:ignore="ContentDescription" />
+
+        <TextView
+            android:id="@+id/introText"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="16dp"
+            android:layout_marginTop="16dp"
+            android:layout_marginEnd="16dp"
+            android:text="@string/recovery_code_confirm_intro"
+            android:textSize="16sp"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toEndOf="@+id/introIcon"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <View
+            android:id="@+id/divider"
+            android:layout_width="0dp"
+            android:layout_height="1dp"
+            android:layout_marginTop="16dp"
+            android:background="@color/divider"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/introText" />
+
+        <androidx.constraintlayout.widget.ConstraintLayout
+            android:id="@+id/wordList"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            app:layout_constraintBottom_toTopOf="@+id/doneButton"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/divider">
+
+            <include layout="@layout/recovery_code_input" />
+
+        </androidx.constraintlayout.widget.ConstraintLayout>
+
+        <Button
+            android:id="@+id/doneButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="8dp"
+            android:layout_marginEnd="8dp"
+            android:layout_marginBottom="8dp"
+            android:text="@string/recovery_code_done_button"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+</ScrollView>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_recovery_code_output.xml b/app/src/main/res/layout/fragment_recovery_code_output.xml
new file mode 100644
index 00000000..679406b4
--- /dev/null
+++ b/app/src/main/res/layout/fragment_recovery_code_output.xml
@@ -0,0 +1,83 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".settings.RecoveryCodeFragment">
+
+    <ImageView
+        android:id="@+id/introIcon"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="24dp"
+        android:src="@drawable/ic_info_outline"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:ignore="ContentDescription" />
+
+    <TextView
+        android:id="@+id/introText"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="16dp"
+        android:layout_marginEnd="16dp"
+        android:text="@string/recovery_code_12_word_intro"
+        android:textSize="16sp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/introIcon"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <TextView
+        android:id="@+id/introText2"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="16dp"
+        android:text="@string/recovery_code_write_it_down"
+        android:textSize="16sp"
+        android:textStyle="bold"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/introIcon"
+        app:layout_constraintTop_toBottomOf="@+id/introText" />
+
+    <View
+        android:id="@+id/divider"
+        android:layout_width="0dp"
+        android:layout_height="1dp"
+        android:layout_marginTop="16dp"
+        android:background="@color/divider"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/introText2" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/wordList"
+        android:layout_width="wrap_content"
+        android:layout_height="0dp"
+        android:orientation="horizontal"
+        app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
+        app:layout_constraintBottom_toTopOf="@+id/confirmCodeButton"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/divider"
+        app:spanCount="6"
+        tools:itemCount="12"
+        tools:listitem="@layout/list_item_recovery_code_output" />
+
+    <Button
+        android:id="@+id/confirmCodeButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginEnd="8dp"
+        android:layout_marginBottom="8dp"
+        android:text="@string/recovery_code_confirm_button"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/list_item_recovery_code_output.xml b/app/src/main/res/layout/list_item_recovery_code_output.xml
new file mode 100644
index 00000000..661c2143
--- /dev/null
+++ b/app/src/main/res/layout/list_item_recovery_code_output.xml
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:padding="16dp"
+    tools:showIn="@layout/fragment_recovery_code_output">
+
+    <TextView
+        android:id="@+id/num"
+        android:layout_width="24dp"
+        android:layout_height="0dp"
+        android:gravity="center_vertical|end"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/word"
+        app:layout_constraintHorizontal_bias="0.0"
+        app:layout_constraintHorizontal_chainStyle="packed"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:text="1." />
+
+    <TextView
+        android:id="@+id/word"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:textSize="24sp"
+        android:autoSizeTextType="uniform"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/num"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:text="Test1" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/recovery_code_input.xml b/app/src/main/res/layout/recovery_code_input.xml
new file mode 100644
index 00000000..03dae663
--- /dev/null
+++ b/app/src/main/res/layout/recovery_code_input.xml
@@ -0,0 +1,263 @@
+<?xml version="1.0" encoding="utf-8"?>
+<merge xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:parentTag="androidx.constraintlayout.widget.ConstraintLayout"
+    tools:showIn="@layout/fragment_recovery_code_input">
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/wordLayout1"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:hint="@string/recovery_code_input_hint_1"
+        android:padding="16dp"
+        app:layout_constraintBottom_toTopOf="@+id/wordLayout2"
+        app:layout_constraintEnd_toStartOf="@+id/wordLayout7"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_chainStyle="spread_inside">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/wordInput1"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:imeOptions="actionNext|flagNavigateNext|flagNoPersonalizedLearning"
+            android:inputType="textAutoComplete"
+            android:nextFocusForward="@+id/wordInput2" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/wordLayout2"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:hint="@string/recovery_code_input_hint_2"
+        android:padding="16dp"
+        app:layout_constraintBottom_toTopOf="@+id/wordLayout3"
+        app:layout_constraintEnd_toStartOf="@+id/wordLayout7"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/wordLayout1">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/wordInput2"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:imeOptions="actionNext|flagNavigateNext|flagNoPersonalizedLearning"
+            android:inputType="textAutoComplete"
+            android:nextFocusForward="@+id/wordInput3" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/wordLayout3"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:hint="@string/recovery_code_input_hint_3"
+        android:padding="16dp"
+        app:layout_constraintBottom_toTopOf="@+id/wordLayout4"
+        app:layout_constraintEnd_toStartOf="@+id/wordLayout7"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/wordLayout2">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/wordInput3"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:imeOptions="actionNext|flagNavigateNext|flagNoPersonalizedLearning"
+            android:inputType="textAutoComplete"
+            android:nextFocusForward="@+id/wordInput4" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/wordLayout4"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:hint="@string/recovery_code_input_hint_4"
+        android:padding="16dp"
+        app:layout_constraintBottom_toTopOf="@+id/wordLayout5"
+        app:layout_constraintEnd_toStartOf="@+id/wordLayout7"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/wordLayout3">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/wordInput4"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:imeOptions="actionNext|flagNavigateNext|flagNoPersonalizedLearning"
+            android:inputType="textAutoComplete"
+            android:nextFocusForward="@+id/wordInput5" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/wordLayout5"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:hint="@string/recovery_code_input_hint_5"
+        android:padding="16dp"
+        app:layout_constraintBottom_toTopOf="@+id/wordLayout6"
+        app:layout_constraintEnd_toStartOf="@+id/wordLayout7"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/wordLayout4">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/wordInput5"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:imeOptions="actionNext|flagNavigateNext|flagNoPersonalizedLearning"
+            android:inputType="textAutoComplete"
+            android:nextFocusForward="@+id/wordInput6" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/wordLayout6"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:hint="@string/recovery_code_input_hint_6"
+        android:padding="16dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/wordLayout7"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/wordLayout5">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/wordInput6"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:imeOptions="actionNext|flagNavigateNext|flagNoPersonalizedLearning"
+            android:inputType="textAutoComplete"
+            android:nextFocusForward="@+id/wordInput7" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/wordLayout7"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:hint="@string/recovery_code_input_hint_7"
+        android:padding="16dp"
+        app:layout_constraintBottom_toTopOf="@+id/wordLayout8"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/wordLayout1"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_chainStyle="spread_inside">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/wordInput7"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:imeOptions="actionNext|flagNavigateNext|flagNoPersonalizedLearning"
+            android:inputType="textAutoComplete"
+            android:nextFocusForward="@+id/wordInput8" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/wordLayout8"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:hint="@string/recovery_code_input_hint_8"
+        android:padding="16dp"
+        app:layout_constraintBottom_toTopOf="@+id/wordLayout9"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/wordLayout1"
+        app:layout_constraintTop_toBottomOf="@+id/wordLayout7">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/wordInput8"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:imeOptions="actionNext|flagNavigateNext|flagNoPersonalizedLearning"
+            android:inputType="textAutoComplete"
+            android:nextFocusForward="@+id/wordInput9" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/wordLayout9"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:hint="@string/recovery_code_input_hint_9"
+        android:padding="16dp"
+        app:layout_constraintBottom_toTopOf="@+id/wordLayout10"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/wordLayout1"
+        app:layout_constraintTop_toBottomOf="@+id/wordLayout8">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/wordInput9"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:imeOptions="actionNext|flagNavigateNext|flagNoPersonalizedLearning"
+            android:inputType="textAutoComplete"
+            android:nextFocusForward="@+id/wordInput10" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/wordLayout10"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:hint="@string/recovery_code_input_hint_10"
+        android:padding="16dp"
+        app:layout_constraintBottom_toTopOf="@+id/wordLayout11"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/wordLayout1"
+        app:layout_constraintTop_toBottomOf="@+id/wordLayout9">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/wordInput10"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:imeOptions="actionNext|flagNavigateNext|flagNoPersonalizedLearning"
+            android:inputType="textAutoComplete"
+            android:nextFocusForward="@+id/wordInput11" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/wordLayout11"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:hint="@string/recovery_code_input_hint_11"
+        android:padding="16dp"
+        app:layout_constraintBottom_toTopOf="@+id/wordLayout12"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/wordLayout1"
+        app:layout_constraintTop_toBottomOf="@+id/wordLayout10">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/wordInput11"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:imeOptions="actionNext|flagNavigateNext|flagNoPersonalizedLearning"
+            android:inputType="textAutoComplete"
+            android:nextFocusForward="@+id/wordInput12" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/wordLayout12"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:hint="@string/recovery_code_input_hint_12"
+        android:padding="16dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/wordLayout1"
+        app:layout_constraintTop_toBottomOf="@+id/wordLayout11">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/wordInput12"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:imeOptions="actionDone|flagNoPersonalizedLearning"
+            android:inputType="textAutoComplete" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+</merge>
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index 3ab3e9cb..e1c4609a 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -3,4 +3,6 @@
     <color name="colorPrimary">#3F51B5</color>
     <color name="colorPrimaryDark">#303F9F</color>
     <color name="colorAccent">#FF4081</color>
+
+    <color name="divider">#8A000000</color>
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 9ec3386e..21aaaf16 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -32,4 +32,27 @@
     <string name="settings_auto_restore_summary">When reinstalling an app, restore backed up settings and data</string>
     <string name="settings_backup_now">Backup now</string>
 
+    <!-- Recovery Code -->
+    <string name="recovery_code_title">Recovery Code</string>
+    <string name="recovery_code_12_word_intro">You need your 12-word recovery code to restore backed up data.</string>
+    <string name="recovery_code_write_it_down">Write it down on paper now!</string>
+    <string name="recovery_code_confirm_button">Confirm Code</string>
+    <string name="recovery_code_confirm_intro">Enter your 12-word recovery code to ensure that it will work when you need it.</string>
+    <string name="recovery_code_done_button">Done</string>
+    <string name="recovery_code_input_hint_1">Word 1</string>
+    <string name="recovery_code_input_hint_2">Word 2</string>
+    <string name="recovery_code_input_hint_3">Word 3</string>
+    <string name="recovery_code_input_hint_4">Word 4</string>
+    <string name="recovery_code_input_hint_5">Word 5</string>
+    <string name="recovery_code_input_hint_6">Word 6</string>
+    <string name="recovery_code_input_hint_7">Word 7</string>
+    <string name="recovery_code_input_hint_8">Word 8</string>
+    <string name="recovery_code_input_hint_9">Word 9</string>
+    <string name="recovery_code_input_hint_10">Word 10</string>
+    <string name="recovery_code_input_hint_11">Word 11</string>
+    <string name="recovery_code_input_hint_12">Word 12</string>
+    <string name="recovery_code_error_empty_word">You forgot to enter this word.</string>
+    <string name="recovery_code_error_invalid_word">Wrong word. Did you mean %1$s or %2$s?</string>
+    <string name="recovery_code_error_checksum_word">We are so sorry! An unexpected error occurred.</string>
+
 </resources>
diff --git a/build.gradle b/build.gradle
index 4aa96118..aee7f914 100644
--- a/build.gradle
+++ b/build.gradle
@@ -2,7 +2,7 @@
 
 buildscript {
 
-    ext.kotlin_version = '1.3.40'
+    ext.kotlin_version = '1.3.41'
 
     repositories {
         jcenter()