Techniques are provided for securing devices using wiggles, which can include small finger motions made on a touch screen associated with a device. The wiggles can be made by one or multiple fingers and can be made without lifting a finger from the touch screen or sliding the finger along the touch screen, which makes wiggles difficult to observe and therefore difficult to reproduce by another person. Wiggles can include directional motions, rotational motions, and multi-touch motions. For applications in device unlocking, a user can register a “wiggle path” and then later execute an input wiggle path discreetly. The device can compare the input wiggle path against the registered wiggle path. If a match is found, the device can grant access to the user.
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Huang, Samuel, "Frictioned Micromotion Input for Touch Sensitive Devices", Technical Disclosure Commons, (May 18, 2015)