Well i can usually get to most of my artists with only the first 2 characters. If i do it when not looking at the screen then i press 3 to be sure. This means i can select an artist with fewer keypresses than with a 4 digit PIN option (im guessing here that one normally uses 4 digit pins), and without having to memorise a whole bunch of pins.

I'd be interested in knowing if anyone still uses the pin option. The pattern matching on the search by artist and search by title is excellent, i think you guys have managed to obselete the pin option.