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Updated: August 24, 2026
A metal button was fastened to one corner of the wafer, and a simple drawing was imbedded in the wafer. Brion held it to the light and saw a picture of a man's hand squeezing the button between thumb and forefinger. It was a subminiaturized playback; mechanical pressure on the case provided enough current to play the recorded message. The plastic sheet vibrated, acting as a loudspeaker.
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