> Given the vast number of surveillance cameras I saw last time in London, I doubt this would add significantly to their capabilities either. The majority of C

> Given the vast number of surveillance cameras I saw last time in London, I doubt this would add significantly to their capabilities either. The majority of CCTV is privately owned. The vast majority of CCTV is not proactively monitored. Tracking someone using London CCTV is someone staring at a screen for a number of hours trying to follow them on playback. I’ve had the joy of recreating someone’s movements in a nightclub from CCTV. A 6 hour night out took me days to reconstruct, and that’s using a small number of cameras in a well defined area. CCTV as a mass surveillance tool just doesn’t work.