Much before AI key listening there was just key listening. And also hidden cameras and tempest attacks.
That's why key scrambling for PINs is so important.
https://coldcard.com/docs/settings#scramb...
Yeah, what is the deal with that? Why is it not already long standard that touchscreen keypads have to be jumbled every time?? Sorry not sorry, muscle memory be damned, the prints are sometimes visible just in sunlight with the screen turned off.