What about that time I had Bell's palsy?
Or, like, any of the myriad other ways your face can change
bbc.co.uk/news/av/techno…
In reply to @christianp
PS not convinced they can tell identical twins apart if they're currently only 95% accurate (that's 1 in 20 incorrect)
In reply to @christianp
Are they *sure* that no two people in a city of 9 million will look the same to this? The birthday paradox means they need a *big* ID space
In reply to @christianp
so, given the people involved aren't stupid: what's this system really for? What error rate have they decided to accept?
In reply to @christianp
I suppose one way of getting anon people to test your face recognition system is to give them a monetary incentive to point out bad matches