Actually, given there's usually quite limited amount of attempts to guess a pin, I don't really worry too much about somebody just guessing a 4-digit pin. So wh

Actually, given there's usually quite limited amount of attempts to guess a pin, I don't really worry too much about somebody just guessing a 4-digit pin. So what if there's "only a 100/500/800" of combinations to try, if you have only 3/5 attempts and only 1 phone you care to break into? What I do worry about, though, is somebody watching me enter the code. And I don't have any paper and a promotion-site with a catchy name to provide, but it feels like catching somebody rapidly entering 4 pseudo-random digits is quite a bit easier than catching them rapidly entering 6 or 8 pseudo-random digits.