Feds Walk into a Building and Demand Everyone's Fingerprints to Open Phones

So... how often are you actually in a situation like that? You know, police with a search warrant.

Or, do you feel that there is a reasonable possibility that will happen to you?

Depending on who is in power in your area, that could change very quickly. If you're of the wrong race, someone like Donald Trump might use three-letter agency-collected data to move you out of the country. Foreign states might want to use your identity to get cheap health care for their citizens.

Immigration policies, substance legal statuses and acceptable social practices and attitudes change overnight. Someone could spam with you child pornography and border officials could find it in your phone at the border.

Furthermore, you don't know what you're going to do with the rest of your life and how the decisions you make now could be perceived in the future.

Maybe someone's watching your house, keeping track of when you're not home. Or maybe they're using your phone patterns to do the same: Checking your phone when you're in the gym, in the bathroom at a restaurant.

And any of these scenarios could be used to threaten you or someone you care about. Did a neighbor ask if you could babysit their children when they're away? Did your aunt admit she has a mental disorder that could get her fired? Did a friend reveal he has a substance abuse problem? Did your elderly parents send you copies of official financial documents to review? Ever looked for a "questionable" book on Amazon?

Furthermore, if you're not following proper safety practices, you could be a liability for future business partners. Who wants to risk sharing data with someone who's loosey-goosey about the info on their systems?

In conclusion, it's not just you, right now that bears thinking about. It's everyone in your social circle over the long-term future.

I understand once you've authenticated who the user is, authorization is just a mask of what they are allowed to do. It is like saying "after you've given your username (GMail account) to Google, it should allow you to read your email. If you happen to be an administrator for Google Business account you can also see other accounts or settings etc".

So hopefully you meant that you just use your fingerprint in place of typing out your username not in place of typing your username _and_ password.

Counterexample popped in my head was parents with a belt asking for iPhone unlocked. Still has respectability, law, and order in most places. I wonder if there are other counterexamples.

The police asks you to surrender you phone. Telling "you have nothing to hide, you shouldn't mind" and you respond with "It is not up to decide if I have something to hide"

Or, your friend is arguing for letting the police see their phone because your friend has nothing to hide. Your friend says "I have nothing to hide". But you respond with "It is not up to you if you have nothing to hide, so you shouldn't have that attitude".

Assuming you meant the second, what is the reasoning behind it?