[elago]

More clarification on the topic would be nice. When I open the Signal app right now, I am nagged to "Create a PIN. PINs keep information that's stored with Signal encrypted. Remind Me Later / Create PIN".

Would be interesting to know if an app specific PIN resists cellebrite analysis. Screen unlocked, Signal PIN enabled.

[pavon]

No Signal does not ask you for your PIN to access your messages. It is required to transfer your account to a new device, if you don't have access to the old one.