They are called Badge Buckys where I am.

What is a bunny badge?

badge bunny (plural badge bunnies) (US, idiomatic) A woman who is romantically attracted to police officers and who seeks out their companionship.

Can cops force you to unlock your phone?

Can they do that? Short answer: If your phone is protected by a passcode or biometric unlocking features, theres a chance police cant gain access to your personal data.