Zero-width characters are invisible, ‘non-printing’ characters that are not displayed by the majority of applications. For example, I’ve inserted 10 zero-width spaces into this sentence, can you tell? (Hint: paste the sentence into Diff Checker to see the locations of the characters!). These characters can be used to ‘fingerprint’ text for certain users.
A cool little trick with text for embedded steganography, security, or other communication purposes.
This could also be used for pseudo-private communication via Webmention even. Just hide your messages inside of public messages.
ᔥ Be careful what you copy: Invisibly inserting usernames into text with Zero-Width Characters (medium.com) ()bookmark
3 thoughts on “”
Microblog posting from 03 Mar 2020 at 19:31:23 +00:00.
@c This is fascinating, exciting, scary! Thanks for the link.
Unicode steganography. Using zero-width spaces for steganographic purposes in text. Because of course. boffosocko.com/2020/03/03/be-…