Eye in the sky: a "pre-crime" surveillance system
A company called Persistent Surveillance Systems has built a "pre-crime" surveillance system. The idea is that you fly a cluster of video cameras over an area that can be the size of a small city — using an airplane or even a drone — and you transmit the day's activities of the entire city to a computer on the ground. When a crime is committed, a system analyst can scrub the video forward and backward in time to find out where the perpetrator came from and where they go after. Ideally, this happens minutes after the crime is committed so the perps can be apprehended. Radiolab recently had a great piece on this technology and its privacy implications.
The system also has other uses — like tracking traffic patterns — but yaaawn. In one of the trials of the technology described in the show, the surveillance video of a hit on a police officer in Juarez, Mexico by members of a drug cartel showed them driving back to what turned out to be the cartel's headquarters. Another trial, in Dayton, OH, resulted in the capture of a burglar only a few blocks from where the crime was committed. Radiolab called this technology a superpower, like Batman hacking into all of the world's cellphones or Superman hovering above the Earth listening to everyone's conversations. Less imaginary comparisons would be to London's network of CCTV cameras or the NSA's recording of a large amount of the world's electronic communications. Fascinating and terrifying all at once.