It was a memorable moment in Pixar’s 2004 classic “The Incredibles,” one that seemed wildly futuristic at the time: Mr. Incredible picks up a wafer-thin tablet computer, and it scans his face to verify his identity before divulging his secret mission. Thirteen years later, many slim phones and tablets unlock with the press of a thumb—and just this sort of mobile facial scanning is on the way. Forget fiddling with passwords or even fingerprints; forget multiple layers of sign-in; forget

credit cards and, eventually, even physical keys to our homes and cars. A handful of laptops and mobile devices can now read facial features, and the technique is about to get a boost from specialized hardware small enough to fit into our phones. Using our faces to unlock things could soon become routine, rather than the purview of spies and superheroes. READ MORE