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.
The only case I would imagine someone trying to guess/brute force the PIN using fingerprints is some sort of state level actor trying to gain access, e.g. during a search warrant