[EiZei]

Or you could just turn since first authentication after booting requires a passcode.

[seiji]

Situation: you're arrested/captured/etc. All they have to do is, on a new 6S phone, touch your finger to the sensor for 1/10th of a second.

There's no emergency evac situation. You either have basically no protection from hostile action or you avoid finger auth.

[eridius]

If there's a reasonable risk that this situation might ever apply to you, then just don't turn on TouchID and always use the passcode.

[Retra]

If you're an international spy or something, maybe don't store your top secret data on consumer-grade electronics.

[seiji]

Or someone you sleep with wants to read your texts and all it takes is a light tap of a finger while you're unconscious to open your phone completely.

as far as "international spy," we have national level security directors storing secrets in AOL accounts. We can't protect people from themselves, so we have to make systems better for everybody.

[ViViDboarder]

I think it's to be determined if that would be an illegal search.

[rogeryu]

If they do stuff like that, they will probably deny that they did it. Having had access to your phone, they can look for information that can be used to find other leads, that will be strong enough for a court order.

[rimantas]

you tap different finger five times. Boom, touch id is off, you need to enter passcode.