Smartphone security: Why doodling trumps text passwords
Someday soon, you may be able to log into your smartphone with sweeping gestures or doodling, using one or more fingers. Researchers have performed the first study of free-form gesture passwords for smartphones in the field. Such passwords allow people to draw a password of any shape with any number of fingers. Gesture, or doodling, passwords are very suitable for touchscreens, faster to use, easy to remember and hard to guess.