They’ll still detain you till you input your passcode. Or they’ll beat you with a rubber hose, if you’re in those parts of the world.

> those parts of the world.

Somehow the only horror stories I read (or experience) is about US or five eyes (NZ being exception).

People in those other countries don't have a right to complain. If you have something incriminating in many countries you just disappear, possibly after a show trial.

They can detain your phone, but if you're a US citizen, they can't detain you for very long.

ICE and CBP can, in practice, hold someone a very long time if they really want to. It just rarely happens.

https://www.latimes.com/local/lanow/la-me-citizens-ice-20180...

They can also make up imaginary charges against you to have you jailed, as cops in the US love to do. Any time an innocent person is gunned down, there's inevitably a story about how they 'charged the officer' or had a weapon or whatever, and then when evidence appears to contradict that, the lie is quietly retracted.

You might say 'well, I have my ID while traveling, so it's fine', but ID is not always considered proof of citizenship. They could drag you aside at security (or elsewhere), decide they don't like the look of you, and decide that your ID isn't proof that you're a citizen. Spend a week or two in jail.

There's no perfect security, and biolocks are absolutely useless for protecting phone access, especially in the US where they have zero 4th Amendment protection.