Face recognition: We know what you look like
Companies have sought to develop reliable face-recognition software for some time now. Facebook, for example, uses facial recognition to identify your Friends in photos. More recently, a startup called Faced.me announced a technology through which you take a user's picture, then the software will identify that person in about a second. After that, you can connect you with that user on Facebook, Twitter, and LinkedIn.
Used securely and prudently, this sort of face-recognition technology is pretty cool. But this turns creepy quickly when a tool for quickly connecting with someone by snapping their picture turns into a tool for secretly and quickly learning someone's identity from a single photo, whether found on the Web or taken candidly with a camera.