[gruez]

>This protects people both ways.

Not really. If the cops want to drag you off and detain you secretly for indefinite amount of time (what the law is trying to prevent), then all they have to do is charge you with some embarrassing crime like "sex with underage minor", to force you to waive that right.

[YawningAngel]

This doesn't work in systems which punish trumped-up charges, which any reasonable system clearly should.