Another way would be request pin when opening the app and the possibility of setting up a duress pin (GrapheneOS inspiration) so if I type duress PIN all data is erased.
Altgought not sure if it would solve the same problem.
Testing an old idea: NFC-based transient accounts: accounts that log off as soon as the app goes to the background, deleting all traces of the account from the phone.
It looks like this in debugging speeds: https://video.nostr.build/ef4274d150303fd28f5e7b6b02a7b0102176263dfb1b491969a0caab6b61e6ad.mp4
If you are an activist and if your phone is confiscated, they will never find anything on the phone. Not even your public key.
Walk around with Amethyst installed and an NFC tag hidden in your clothing. When you need to use Amethyst, tap the tag, insert your password and login. Lock the screen to delete everything.
The NFC has a NIP-49 password-encrypted nsec. If you need, destroy and dispose the NFC tag.
Discussion
I didn't know this function yet.
Pretty cool!