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A comment on In 1844, Chess Was Online. Parent comment

Re:In 1844, Chess Was Online by kqr on Friday December 19, 2025 @03:27AM (#46323534)
Did they somehow find a way to make a long tap (e.g. slide something against the radiator for a continuous signal) or did they agree on two different kinds of short taps? (Or do the pipes resonate for long but can be dampened by hand to produce a short tap?)
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Re:In 1844, Chess Was Online by cwillu on Friday December 19, 2025 @06:25AM (#46324605)
I believe the usual thing is to essentially encode it by the spaces between the taps, rather than the taps themselves.
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Re:In 1844, Chess Was Online by kqr on Friday December 19, 2025 @12:00PM (#46328086)
But then how does one distinguish between letters? Something like "ETA" would be difficult to tell apart from "II".
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Re:In 1844, Chess Was Online by qingcharles on Friday December 19, 2025 @01:18PM (#46329030)
I used this:

https://en.wikipedia.org/wiki/Tap_code

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