alt.hn

4/7/2026 at 12:57:25 PM

Show HN: Unicode Steganography

https://steganography.patrickvuscan.com

by PatrickVuscan

4/7/2026 at 9:56:59 PM

Cool stuff. I think there have been projects recently that use LLMs to encode messages in plain text by manipulating the choices of output tokens. Someone with the same version of the LLM can decode. Note sure where to find these projects though.

by bo1024

4/7/2026 at 10:26:34 PM

Wow, just found it: https://news.ycombinator.com/item?id=43030436 thanks for bringing this up, gave me some good reading material for tonight!

by PatrickVuscan

4/8/2026 at 8:21:40 PM

I created something similar a long long time ago, but much simpler, using markov chains. Basically just encoding data via the choice of the next word tuple given the current word tuple. It generated gibberish mostly, but was fun 25 years ago

by adzm

4/7/2026 at 10:59:45 PM

You can actually do better: hint - variational selectors, low bytes.

by mpoteat

4/8/2026 at 5:42:56 PM

I went down the rabbit hole last night, and found some great resources on variational selectors. Thanks for the inspiration, I added a demo of this to the site as well!

by PatrickVuscan

4/8/2026 at 5:58:39 AM

There are a bunch of invisible characters that I used to build something similar a while back, pre LLMs, to hide state info in telegram messages to make bots more powerful

https://github.com/sixhobbits/unisteg

by sixhobbits

4/7/2026 at 9:14:36 PM

[flagged]

by aaztehcy