I think this is probably only the tip of the iceberg as well - facial recognition is one thing, although it can be difficult if your face is obscured somehow. T

I think this is probably only the tip of the iceberg as well - facial recognition is one thing, although it can be difficult if your face is obscured somehow. The real fun will begin when they can start doing things like gait recognition + other features for person re-id in real-time across CCTV networks. Fortunately I think we're some way off doing that reliably and with a reasonable cost.