At the same time that the Met police announced they are to start using live facial recognition cameras in London I picked up my Mother's iPhone.  It "recognised" my face and unlocked her phone.  

If, as the article states, 80% of those asked support the move, then the assumption has to be that the benefits of being able to identify and track serious criminals and missing persons outweighs the possibility that the "recognition" might actually be wrong.

You've only got to watch the skits of Daniel Radcliffe on the Graham Norton show - where Graham shows us photos of Daniel Radcliffe doppelgangers through the ages - to know there are definitely only so many unique faces in the world. 

Big unprecedented questions - to be answered by regulators, legislators and every single one of us who have an opinion.