Tap code is a notation created in 1941. The tap code, sometimes called the knock code, is a way to encode text messages on a letter-by-letter basis in a very simple way. The message is transmitted using a series of tap sounds, hence its name. The tap code has been commonly used by prisoners to communicate with each other. Read more on Wikipedia...

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  • Tap code ranks in the top 25% of languages
  • the Tap code wikipedia page
  • Tap code first appeared in 1941
  • See also: morse-code
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Last updated February 18th, 2020

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