The U.S. Patent and Trademark Office on Wednesday published two Apple patent applications (1, 2), both titled “Gesture entry techniques,” that together form the basis of a device unlocking feature in which a user draws a pattern on screen with the help of illuminated discs. One patent filing deals with the system as a whole, while the other focuses on entering and setting gestures on a mobile device. As noted in the documents, a gesture or sequence of gestures may be more effective in securing a mobile device than the usual PIN code or password. To that end, Apple proposes users input a shape or shapes on an interface with selectable graphical elements. In 2008, Google introduced pattern unlocking in its Android operating system, which accepts gesture input on a grid of dots to unlock a device.
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"Apple Patents Geture-Based Screen Unlocking Tech, Similar to Android" by @ShellyPalmer
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