Tap, Tap,
Oh-lala
"Tap" is unique, interesting unlock utility.
You can unlock your Mac using multi-touch and drawing simple gestures on Trackpad or Magic Trackpad.
The number of finger becomes a character of password.
Also you can draw gesture and it also becomes a character of password.
One gesture = A character of password.
The number of fingers = A character of password.
So you can make your own unique password with multi-touch and gesture.
Enjoy!