Don't most people have a 4 digit pin?
But in any case showing pins that way wouldn't work anyway - most people have a muscle memory for their pins, but would not recognize them when written down.
But in any case showing pins that way wouldn't work anyway - most people have a muscle memory for their pins, but would not recognize them when written down.
Having said that, I would recognise both PINs as both a string of digits and as a spatial sequence... so that would probably just be another attack vector.
I trained myself to do this on purpose; subvocalising a different number. If I'm drugged out in a hospital bed and someone asks for my CC PIN, I want them to get an incorrect number.
I'm not genuinely worried about being robbed of my PIN, though. I just found the mental challenge interesting.