[Requirements] - Android 8 (or later) - QNAP NAS running QTS 5.1.0 (or later) QNAP Authenticator is a free app that adds an extra layer of security to your accounts by using your mobile device to verify your login. You can authenticate your identity using 2-Step Verification or Passwordless Login and choose from multiple verification methods. Major features of QNAP Authenticator: - Supports 2-Step Verification and Passwordless Login - Supports scanning a QR code to quickly add an account