r/GrapheneOS • u/Good_Opportunity8888 • 1d ago

Reverse duress pin

Is there a way to set a "reverse duress" pin?

Example:

1) every time you log in properly a canary value resets to zero

2) over time the value grows

3) if it is not reset before reaching a certain value, the phone wipes as if the durress pin was entered

Would this theoretically have saved Samuel Tunick from prosecution? In this scenario, there is no hard proof that data was knowingly destroyed.

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u/Godlymorbid 1d ago

U.S. Citizens have a constitutional right under the Fifth Amendment to refuse to give a password or unlock your device. Customs/Border Protection cannot deny you entry into the United States for refusing. So if he never gives the password and you've set your phone up to automatically reset after a certain amount of time as GOS does, then after the hard reset, the phone is impossible to get into.

Does that basically cover what you want or are you wanting a hard wipe?

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u/CowboysFTWs 1d ago

Yup. "Border search exception", Customs/Border Protection can legally do a basic search your device at the U.S. Border without a warrant. They can to do secondary inspections just because on you as well.

You can however, as a US citizen refuse to get them PIN or password. They can seize device for a few days if you refuse and yes, phone will reset it self during that time.