Former CIA Chief of Disguise Explains How Spies Use Disguises [video]
With Facebook and facial recognition, spies can be identified before they even know they want to become a spy. There is literally a lifetime of facial recognition data on social networks for youths and college grads as they post their pics online, and if they get recruited to become a spy in their 20s, there will already be enough information to identify people globally, as they walk through airports, shopping centers, etc and have their pictures videoed constantly.Facebook, et. al is a treasure trove of data for purposes like these.