Tap code: Difference between revisions

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m Reverted edits by 195.83.89.94 (talk) to last version by Ingenuity
the explanation of how to use it got row and column mixed up
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The tap code is based on a [[Polybius square]] using a 5×5 grid of letters representing all the letters of the [[Latin alphabet]], except for K, which is represented by C.
 
Each letter is communicated by tapping two numbers, the first designating the rowcolumn and the second (after a pause) designating the columnrow. For example, to specify the letter "B", one taps once, pauses, and then taps twice. The listener only needs to discriminate the timing of the taps to isolate letters.
 
To communicate the word "hello", the cipher would be the following (with the pause between each number in a pair being shorter than the pause between letters):