ah here we go. It was a plastic disk that could be glued to the back of a child’s back molar to help identify them if they died or got lost. First introduced in the mid 1980s, it was a ‘thing’ in the 1990s, just as controversial then as RFID is now.

ah here we go. It was a plastic disk that could be glued to the back of a child’s back molar to help identify them if they died or got lost.

First introduced in the mid 1980s, it was a ‘thing’ in the 1990s, just as controversial then as RFID is now.

 

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