The technology has become popular and widespread, with the result that Britons are by far the most watched people on Earth, with one camera for every fourteen people, according to recent estimates.The trend coincides with a growing culture of snooping in Britain, where speed cameras rule the highway, residents post their own cameras to spy on trespassers, and the favorite TV shows revolve around hidden cameras observing bland people lounging around.Some cameras are being developed with face-recognition technology that raises further alarms.