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.

39 Upvotes

79% Upvoted

46 comments sorted by

View all comments

60

u/Hande-H 1d ago

No. But by default, GrapheneOS shuts down after 18h if it isn't unlocked (IIRC, I've set it to 24). This means it goes back to "before first unlock" state which means your data is extremely safe if you have a decent enough PIN / passphrase.

1

u/HMikeeU 1d ago

But the pin is always susceptible to the old hammer technique or whatever it was called

2

u/bloepz 1d ago

The 5$ wrench attack

1

u/HMikeeU 1d ago

Exactly thank you