> And final tip, on an iphone, hitting the lock button on the side five times rapidly will disable the biometric unlock until the passcode has been filled in. It also pops up with the option to call emergency services. Spamming the lock button is considered a panic button.

This may vary from iPhone model to iPhone model, but you can also disable biometric unlock by holding down both the lock button and one of the volume buttons for several seconds. This approach is more discrete.

The "spam the lock button" starts the emergency call countdown, which is accompanied by a loud alarm.

The "hold lock and volume" method brings up the screen with the "slide to power off" button, the "medical ID" button, and the "emergency call" button, but does not immediately start the emergency call countdown. If you keep holding lock and volume it will start the emergency call countdown with a 5 second countdown and without an alarm.

Edit: Here is Apple's documentation on this [1]. Some of this is configurable in the "Emergency SOS" settings.

[1] https://support.apple.com/guide/iphone/make-emergency-calls-...

Thank you for this. Didn't know the lock and volume trick.

> Second, of course, don't keep evidence of crimes on your phone.

Also, if you have accomplices in your crimes make sure they don't keep evidence of your involvement on their phones.

The Fifth Amendment covers self-incrimination. It doesn't cover incrimination against others.

A prosecutor can grant one of your accomplices immunity to prosecution based on any evidence found on their phone about their crimes, and then it is fine under the Fifth Amendment to force them to unlock their phone and then use any evidence of your crimes found on their phone against you.

> identification, NOT authorization

if a user can't decouple the two and control them as distinct mechanisms, the user interaction serves as both and this distinction is irrelevant

apologies but bringing this particular distinction up when has no bearing on the discussion is a pet peeve of mine

On Android, rebooting the phone will disable biometric login until the passcode is re-entered.

You can do the same by pressing and holding the power button on the lock screen to pull up a menu, then press Lockdown. I'm not sure if it's enabled by default, but it is a security option on at least Android 11+.

At least 10+, and I think it may have been introduced in 9 if I remember past upgrades correctly. I don't think it's something enabled by default, but it is available to turn on in the default security settings page.

Kind of hard to do that in front of the coppers though, especially if they have already taken it from you.

Same on iOS and iPadOS. Power cycling requires the passcode.

>on an iphone, hitting the lock button on the side five times rapidly will disable the biometric unlock until the passcode has been filled in.

I don't know what iPhone you have, but on mine, that brings up Apple Pay.