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Help Is there a way to do this?

Dwarvo

Lurker
I am new here but I figured I could come seeking help. Sorry if this is the wrong spot. I am trying to help someone I know set up his phone so no one can get into it. Basically his daughter steals his phone at night. Every time he changes the code his wife gives the daughter his code. So, he wants to set it up so that you either have to use both fingerprint/face and code or just the face. He doesn't want to lock every app and I was reading about an app locker with guest mode but he doesn't like that idea. He wants 2 locks on his phone or just his face so his daughter can't unlock it while he's sleeping. Thanks for the help.
 
No, fingerprint can always be overridden by a more trusted identification, i.e. password or PIN (yes, biometrics are weaker security). This is a system software thing, not something an app can modify.

The obvious answer is not to tell his wife the code. Actually I see no practical difference between that and what you are asking: the solution you propose would lock her out as well, just like not telling her the password would.
 
Welcome to Android Forums, Dwarvo!

The weakest link in this scenario is, as Hadron pointed out, the wife--not the phone's security.

I can't think of a single approach, including combinations, e.g., fingerprint plus PIN, that will guard against the wife giving the daughter the code. You said the daughter takes the phone at night. What's to stop her from holding her sleeping dad's finger on the fingerprint scanner? Right, nothing!

Really, your friend's best solution is to stop telling his wife his code--either that, or put the phone in a safe at night...but I'll bet she knows its code, too...
 
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