I mean like, after I type a password on a computer, I’d rub my fingers across the entire keyboard to make sure any fingerprints/oil-residues gets evenly distributed so its harder to know the password. Same with phone unlock codes, I just use my fingers to rub against the part of the screen where the virtual keyboard was displayed.
Am I being weird? I’ve had this habit since the first time I got my first digital electronics.
I think the concern is overblown. The time it would take to try possible combinations would look very suspicious, at least at the ATMs which are embedded into actual banks in my area.
With that said, I pretend to press a few random keys whenever I use my debit card pin.