Invisible text that AI chatbots understand and humans can’t? Yep, it’s a thing. A quirk in the Unicode standard harbors an ideal steganographic code channel.

With multi-byte, variable-width character strings, the usual functions like strlen fall apart. Unicode’s combining characters also causes problems when it comes to comparison and collation of text.

What other common (or uncommon I suppose...) text encoding formats are there besides ASCII and Unicode.I know that in ASCII the string 12345 would be stored as 3132333435. I've seen that string ...