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[tech] Zero-width characters and tracking via pasted text

Stephane Bortzmeyer stephane at sources.org

Sun Mar 14 17:41:23 GMT 2021

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On Sun, Mar 14, 2021 at 04:12:12PM +0000, nervuri <nervuri at disroot.org> wrote a message of 34 lines which said:

This subtle form of tracking would work just as well on Gemini as it
does on the web.

This is technically interesting but do you suggest that Gemini bemodified in one way or the other, to limit the risks? And, if so, how?

As you note in <gemini://rawtext.club/~nervuri/stega.gmi>, it canperfectly be done without zero-width characters. A trivial way is toencode the hidden information in a number of ordinary spaces at theend of each line.