Cops can force suspect to unlock phone with thumbprint, US court rules

hedge@beehaw.org to Technology@beehaw.org – 132 points –
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On android there's Lockdown mode, so everyone should look into this regardless of what phone you have. Better to look up what to do now rather than when you need it

https://www.zdnet.com/article/how-to-use-the-android-lockdown-mode-and-why-you-should/

I'd like a way to require a pattern outside of predefined locations or WiFi networks. Anyone know of a way?

Lockdown is great but if you fail to put it on then it's open access for unscrupulous cops.

For almost any phone: just turn it off. Every phone I've used requires a passcode after a power cycle

That's not really related to what I asked though...

Sorry, I misread your comment, I thought you were asking for a method other than one using lockdown mode. I doubt there's a method using location if it isn't provided by the manufacturer, because an app trying to do that would need permissions to lock the phone.

You could try one of those automation apps. I remember seeing some triggers for entering and leaving a location, and the advanced ones should be able to use wifi connections/disconnections

Whether it can change security settings though I'm not as sure about.

They can... or could, on rooted phones. Apps like Tasker have a root mode module that can do pretty much anything. Haven't used it for a while, though.

Running tasker on a unrooted Fairphone 5 There is a function "System Lock" which locks the phone so you have to enter the PIN. I created a task and a widget on the home screen that triggers the task

I did give tasker some extra rights via adb, which is a quite straight forward process. I think the dev even has a guide for it...

Smartlock? You can set trusted locations and devices, that keep your phone unlocked. Otherwise your regular pin/password kicks in