Device lock screen
The device lock screen is a mobile device feature. Once configured in the system settings, the user has to enter their credentials to unlock and use the device. The type of credentials depends on the operating system of the device. The following table shows the supported credentials and lock screen types.
| Platform | Credential / Lock screen type |
|---|---|
| Android | Pattern, PIN or Password |
| iOS | Passcode |
The Nevis Mobile Authentication SDK requires a device lock screen to be set. Secure storage of data is only possible with an active device lock screen. The user can also combine the screen lock with a biometric credential. In this case, the screen lock can be dismissed with the chosen credential, or the biometric credential. The following table shows the supported biometric credentials.
| Platform | Credential / Lock screen type | Biometric credential |
|---|---|---|
| Android | Pattern, PIN or Password | Fingerprint, Face Authentication |
| iOS | Passcode | Touch ID or Face ID |
The SDK still works correctly if the device lock screen is configured to use only a supported credential without a biometric credential.
When the device lock screen is disabled and re-enabled, key materials are deleted by the system. Therefore the mobile application must go through all the registration processes again for the authenticators managed by the OS: TouchID, FaceID, device passcode in iOS; biometric, fingerprint and device passcode in Android.
Secure storage of data is only possible with an active device lock screen.