Historical information
Closed Circuit Television allows people to view items placed upon a board, which slides up, down or across. Developed initially as either a security measure by Leon Theremin (1925) or by Siemans (1947) for rocket launchers, their magnification ability is used for reading by those with a vision impairment. In this image a young person sits in front of a screen which has the words "But Lisa said/Cigarettes just/They're bad" on it. An abstract painting hangs on the brown wall to the side of the desk.
