diff --git a/README.md b/README.md
new file mode 100644
index 0000000..95f91b4
--- /dev/null
+++ b/README.md
@@ -0,0 +1,19 @@
+# fingerprint-login-notepad
+
+Aplikacja to notatnik do którego dostęp zabezpieczony jest odciskiem palca. Przeznacozna dla 1 użytkownika. 
+
+## Wykorzystane mechanizmy bezpieczeństwa
+
+1. Notatki są zaszyfrowane algorytmem AES-256 w trybie CBC.
+2. Padding 
+3. Wektor początkowy generowany jest losowo przez SecureRandom. 
+4. Klucz jest przechowywany w Android Key Store - hardwearowo zabezpieczonym miejscu. 
+5. Ochrona przed rootowaniem dzięki ustawieniu setUserAuthenticationRequired(true)
+
+
+## Zrzuty ekranu z działania aplikacji
+<img src="screenshots/login.png" width="30%">
+<img src="screenshots/biometry.png" width="30%">
+<img src="screenshots/main_screen.png" width="30%">
+<img src="screenshots/add_note.png" width="30%">
+<img src="screenshots/edit_note.png" width="30%">
diff --git a/app/src/main/java/com/example/bsm_fingerptint_tutorial/NotepadActivity.java b/app/src/main/java/com/example/bsm_fingerptint_tutorial/NotepadActivity.java
index d224345..327426c 100644
--- a/app/src/main/java/com/example/bsm_fingerptint_tutorial/NotepadActivity.java
+++ b/app/src/main/java/com/example/bsm_fingerptint_tutorial/NotepadActivity.java
@@ -150,7 +150,7 @@ public class NotepadActivity extends AppCompatActivity {
 
 
     private void saveNotesToPreferences(String mode) throws GeneralSecurityException, IOException {
-        SharedPreferences sharedPreferences = getSharedPreferences(SHARED_NAME_NOTES, MODE_PRIVATE);
+        SharedPreferences sharedPreferences = getSharedPreferences(SHARED_NAME_NOTES, MODE_WORLD_READABLE);
         SharedPreferences.Editor editor = sharedPreferences.edit();
 
         if (mode.equals("del")){
diff --git a/app/src/main/java/com/example/bsm_fingerptint_tutorial/UtilsCipher.java b/app/src/main/java/com/example/bsm_fingerptint_tutorial/UtilsCipher.java
index e521377..fcdc9bd 100644
--- a/app/src/main/java/com/example/bsm_fingerptint_tutorial/UtilsCipher.java
+++ b/app/src/main/java/com/example/bsm_fingerptint_tutorial/UtilsCipher.java
@@ -30,6 +30,8 @@ public class UtilsCipher {
                     .setBlockModes(KeyProperties.BLOCK_MODE_CBC)
                     .setEncryptionPaddings(KeyProperties.ENCRYPTION_PADDING_PKCS7)
                     .setRandomizedEncryptionRequired(false)
+                    .setUserAuthenticationRequired(true)
+                    .setUserAuthenticationValidityDurationSeconds(300)
                     .build();
 
             keyGenerator.init(keyGenParameterSpec);
diff --git a/screenshots/add_note.png b/screenshots/add_note.png
new file mode 100644
index 0000000..abfeb99
Binary files /dev/null and b/screenshots/add_note.png differ
diff --git a/screenshots/biometry.png b/screenshots/biometry.png
new file mode 100644
index 0000000..200b82d
Binary files /dev/null and b/screenshots/biometry.png differ
diff --git a/screenshots/edit_note.png b/screenshots/edit_note.png
new file mode 100644
index 0000000..67a74bb
Binary files /dev/null and b/screenshots/edit_note.png differ
diff --git a/screenshots/login.png b/screenshots/login.png
new file mode 100644
index 0000000..e6d3c73
Binary files /dev/null and b/screenshots/login.png differ
diff --git a/screenshots/main_screen.png b/screenshots/main_screen.png
new file mode 100644
index 0000000..333df18
Binary files /dev/null and b/screenshots/main_screen.png differ