burglar alarm systems
The image establishes the perception of an eye that sees all. The idea that this unnamed individual is always watching from the shadows establishes the social
order of the society whose members have learned better than to utter anything that might be construed as negatively related to Big Brother and The Party, which is the ruling upper class. Orwell’s first reference to “Big Brother” is found the third paragraph of the first chapter of 1984. He writes, " “The flat was seven flights up, and Winston, who was thirty nine and had a varicose ulcer above his right ankle, went slowly, resting several times on the way. On each landing, opposite the lift shaft, the poster with
the enormous face gazed from the wall. It was one of those pictures which are so contrived that the eyes follow you about when you move.