I was passing by a strip mall and saw an advert on the Television about this technology that allows users to touch a certain part of their picture they put as a background (the advert showed them tracing a kid's pigtails) and it unlocks the computer. I wanted to know what the feature was called and if they have it for smart phones (not that puzzle piece sliding thing or the dots you drag your finger on, but an actual background you can upload of anything). It's been driving me insane 