Despite the downvotes, your concern is legitimate. Refusal to comply with a legal order is typically a crime of its own.

I'm sure someone will say that they'd just lie about which finger they set up. And sure, you can do that. But if you do it in sworn testimony, it's perjury.

It's definitely a gray area. But there is a huge difference between a court order requiring you to comply with unlocking your phone and a cop demanding to access your phone at a traffic stop.

Zion the latter case, did you comply or not? Did you use the wrong finger or not? Did you intentionally resist or did the sensor fail to work properly/efficiently?

Those are extremely difficult things to prove layer in court.

In the US, you can get into a ton of trouble lying to the police even if it's not sworn testimony.

But it's not lying here. It's intentional hiding of facts. Not saying it won't get anyone in trouble.

Norway infamously has some of the nicest of prisons though. I heard a story where the prison guards forgot to lock the jail sells in a prison and the inmates got out and made sandwiches for the night guards.