Originally Posted by rowan

There was an announcement several years ago about sort of toolbar/plugin that would identify people (real name) in photos shown on web pages. Not entirely sure if it was for real, or just a silly hoax, but it did provoke a lot of heated debate.

Facebook can currently provide tag suggestions for unlabelled photos because it learns how to identify faces from previous tags. I bet they could already go further (in terms of the technology) but they're holding back because it would just be too creepy. Imagine if in 10 or 20 years time you had to provide photo ID in order to open an account?...