Two Factor Authentication - Aegis Authenticator

Aegis is free and open source factor authenticator for Android supporting the HMAC-based one-time
password (HOTP) and Time-based one-time password (TOTP) standard algorithms. Its vault protected by
a password (scrypt) or biometrics (Android Keystore). New entries are added using QR code, saved
images, entered manually or imported from other applications. Its data easily backed up or exported
in several formats.