It is a deep concern, as companies such as Facebook and Google are increasingly using facial recognition. The ability to identify somebody more precisely from simply taking a picture of them is something that should be of concern to all of us. It would encourage greater stalking, cyber-stalking and other stalking. More broadly, I think it raises another trend that I was alluding to, that the distinction between personal information and non-personal information is becoming increasingly difficult to identify.
We tend not to think about personal information anymore, or personally identifiable information, but whether it is personally identifiable information, and facial recognition, the ability to link up a face or an image to a real individual is an example of the increasing identifiability of all of us online.