Viettel Authenticator provide an additional layer 2-Step Verification of security when signing in. With 2-Step Verification, signing into your account will require both your password and a verification code you can generate with this app. Viettel Authenticator works with all systems provided by Viettel and any systems configured with GoogleAuth Features: - Add new token by scan QR code or manual - Support for multiple categories - Search token by name, issuer, tag...