Use two fingers to put in your PIN
One actually presses, the other one doesn’t
You could generate an absurd amount of possible PINs that could work on your card, giving any PIN peepers a seriously hard time, should they somehow have the intent to get ahold of your card and PIN through spying and pickpocketing
Sometimes I’ll do like jazz hand fingers on the keypad so it looks like I’m just jamming a bunch of random numbers.
Or I’ll mimic something like this but without actually pressing the buttons