It's actually a really nice feature. It's quick, potentially (barring grease smear issues) more secure since you can use all nine points on the screen, and always optional.
This is one thing I've found that my Apple using friends are always a bit jealous of because it is slightly easier than punching in a pin number.
Ah, I didn't realize you could use all nine points, my thinking was that it limited your options since there were fewer points and you couldn't repeat... but clearly that was wrong :)
This is one thing I've found that my Apple using friends are always a bit jealous of because it is slightly easier than punching in a pin number.