There's a potential secondary usability trade-off. I only know my PIN by the pattern it makes on the keys. I don't actually have the numbers memorized, just t

There's a potential secondary usability trade-off. I only know my PIN by the pattern it makes on the keys. I don't actually have the numbers memorized, just the positional order on a standard keypad layout. So if the numbers are randomized, I would have a really hard time.