Nuxt HN | Ask HN: Smallest amount of working ML weights that can be tattooed on a body?

Recently saw this comment on another HN thread about the US government gating access to GPT-5.6 and how it harkens back to the 1990s encryption-as-export-controllable-tech situation and how people tattoo'd the algo to their bodies:

> I can't wait for the first person to tattoo model weights on their body!

(https://news.ycombinator.com/item?id=48693721)

And I can't help but wonder, what would be the smallest functional amount of weights from any sort of ML model you could realistically tattoo onto a human body or body part?

3 comments

asxndu 16 hours ago
Definitely Andrej Kapathy's 250 line code of Micro GPT.
I think it can fit on someone's back. (if a small enough font is used)
- https://gist.github.com/karpathy/8627fe009c40f57531cb1836010...
- https://karpathy.github.io/2026/02/12/microgpt/
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- lawlorino 6 hours ago
  That’s lines of code, not weights
lawlorino 6 hours ago
I don’t think you can get a more simple ML model than linear regression?
y=w0+x*w1
totalconfusion 12 hours ago
Encode it into a barcode