The large number of surveillance cameras in London may help identify the bombing suspects. "In all, there are at least 500,000 cameras in the city, and one study showed that in a single day a person could expect to be filmed 300 times."
The large number of surveillance cameras in London may help identify the bombing suspects. "In all, there are at least 500,000 cameras in the city, and one study showed that in a single day a person could expect to be filmed 300 times."