Add scrambled PIN option.

[Transisto]

Scrambled PIN is superior to pattern when used in semi-public spaces.

pattern also require wiping the screen thoroughly after every uses, very few people will think of doing that, making this wallet one of the least secure I've seen.

[aaronisme]

which pin do you mean? the pin on the mobile app or the hardware? we are required the user to use the complex password to manage the hardware device

[Transisto]

Patern should be a PIN on the hardware, (with randomized digits pad.)
even after wiping the screen I can still see a smudge of my unlock pattern with a flashlight.