1. a rotary dialer. Touch screen or motion based.
2. Combination lock also touch screen or motion based, using only 180 degrees of freedom. Hold the phone and turn it to the left to a certain angle, then back to the right then back to the left. Then the the phone unlocks. or a touchscreen lock thay you can spin with your finger.
2. Combination lock also touch screen or motion based, using only 180 degrees of freedom. Hold the phone and turn it to the left to a certain angle, then back to the right then back to the left. Then the the phone unlocks. or a touchscreen lock thay you can spin with your finger.
