I have often thought about the fact that when intimate relationship partners live together they eventually tend to sneak over your shoulder and gain access to your password on either your mobile phone or your pc.
Furthermore, swipable screen locks have been invented on smartphones because people get fed up typing the password each time, but these are easier to observe and break.
So, with fingerprints this problem is partially taken care of, but what if, while you are asleep, your partner grabs your phone and finger and uses it to unlock your phone, and then read, or even modify, or even delete your data?
For this reason, I was thinking a solution would be a simultaneous fingerprint reader and iris scanner to make sure you are actually awake while unlocking and using your phone.
Has this been implemented anywhere?
What other solutions to this problem might be available?