SGWEN - VII ème Caire - Roman Alphabet Tap Code The tap code is a way to encode text messages on a letter-by-letter basis by transmitting a series of tap (knock) sounds.
![Figure 5 from Exploring Russian Tap-Code Text Entry Adaptions for Users with Reduced Target Hitting Accuracy | Semantic Scholar Figure 5 from Exploring Russian Tap-Code Text Entry Adaptions for Users with Reduced Target Hitting Accuracy | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/6baf9f0e9c58b126202cf9aea3a8a6336135b862/3-Figure5-1.png)
Figure 5 from Exploring Russian Tap-Code Text Entry Adaptions for Users with Reduced Target Hitting Accuracy | Semantic Scholar
![Tap Code: The Epic Survival Tale of a Vietnam POW and the Secret Code That Changed Everything - YouTube Tap Code: The Epic Survival Tale of a Vietnam POW and the Secret Code That Changed Everything - YouTube](https://i.ytimg.com/vi/q4lI6_V6SqA/sddefault.jpg?sqp=-oaymwEmCIAFEOAD8quKqQMa8AEB-AH-BIAC4AOKAgwIABABGGQgZChkMA8=&rs=AOn4CLAYLLUZx5by6H15xRnPILJTprooGQ)