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→Design: unclear how "very precise timing" can be used to change the perceived duration of taps; copyedit |
m →Design: The read order for deciphering tap code was mistakenly written as row *then* column instead of column *then* row. |
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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
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):
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