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Sony inadvertently sold 700,000 camcorders that could see through people's clothing in 1998.
Sony built the cameras to record footage more effectively in low-light conditions. So their error was unintentional. Because they could record in infrared, the camcorders could see through clothing. During the day, though, you could see right through someone's outer layer of clothing! Sony sought to recall all of the cameras as soon as they recognised their blunder, making it their largest product recall to date.