What happens if - You don't want to give police your fingerprints

They can't take them without a court order, or without charging you with something, right? Although if you're a suspect and you didn't do it, it'd be against you to resist.

People who refuse because of "rights" claims are just wasting time. If you've done nothing wrong, stop making things difficult and get it over with.

They can take fingerprint and DNA records if you're arrested, regardless of whether you're charged or not. Even if you're found innocent of any charges, their policy is generally to keep them, to the extent that someone actually had to go all the way to the European Court of Human Rights to get them removed from the system.

Really? Well, that kinda sucks! When I said without charging you with something, I meant taking you in and booking you or whatever. Like, if they're questioning you, they can't take them, right? I'm probably watching too much CSI

"If you're done nothing wrong you've got nothing to hide" is incredibly dangerous logic.

someone actually had to go all the way to the European Court of Human Rights to get them removed from the system.

Better than refusing to do something leading people to assume you've done something wrong when in fact you haven't.

why the **** does it even matter i don't get people like that, as long as you're not going to commit a serious crime it won't affect you one bit

I dare say you wouldn't like me watching you while you took a shower,

It matters because expectation of privacy does exist even when you've got nothing to hide; I dare say you wouldn't like me watching you while you took a shower, or installing cameras in your home, but also because government is not infallible and is entirely capable of using information it collects for malicious ends, or simply screwing up by accident.