Google patents new facial recognition technology to let users unlock phones with a wink and a smile

Google first implemented face-unlock in ICS, and since then, they've been hard at work improving the feature and acquiring new IP related to it. Last fall, the search giant patented a way for multiple users to use face-unlock on a single device. This week it obtained a new patent for a method that requires users to make a series of facial expressions to gain access to a system. Essentially, the patent claims a method where a device captures two images of a user, then compares the differences in ...