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This was the world's first baby monitor. Guess the year.
(hexbear.net)
Spoiler
1938
The Radio Nurse was the first electronic baby monitor. Manufactured by the Zenith Radio Corporation, it went on sale in 1938. The product was developed by Zenith executive Eugene F. McDonald, and designed by Japanese-American sculptor and product designer Isamu Noguchi.
Although the product was manufactured for only a few years, it has been acclaimed for its design. It is still in demand as a collectible and is in many museum collections.
Noguchi also designed the Noguchi table.
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babies must rise up against the parent surveillance state.