The unit also comes with a fingerprint reader, so only the owner can play films.

Some relatively cheap smartphones now have facial recognition or a fingerprint reader, which will add an extra layer of security.

So if you have contactless payments set up on your phone, turn on facial recognition or your fingerprint reader instead of using a password.

Detectives did not have the power to force his thumb on to the fingerprint reader to unlock it, so they came up with a radical solution.

For example, the authentication dialog for a system equipped with a fingerprint reader might look different from an authentication dialog for a system without one.