— Part I, Chapter I, Nineteen Eighty-Four ------This articleAny sound that Winston made, above the level of a very low whisper, would be picked up by it; moreover, so long as he remained within the field of vision which the metal plaque commanded, he could be seen as well as heard. There was of course no way of knowing whether you were being watched at any given moment. How often, or on what system, the Thought Police plugged in on any individual wire was guesswork.
In promotional materials, Intrado writes that Beware could reveal that the resident of a particular address was a war veteran suffering from post-traumatic stress disorder, had criminal convictions for assault and had posted worrisome messages about his battle experiences on social media. The “big data” that has transformed marketing and other industries has now come to law enforcement.