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cryptographical

4 karma · joined August 7, 2026

a human being.
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cryptographical··on Show HN: LIZARD – 16 Mbps GPU accelerated optical file transfer on Android
I have released an optical file transfer format called LIZARD. Unlike QR codes, it is optimized for a digital rather than physical format: it degrades gracefully by distance and resolution. Here is it demonstrated crossing 16 Mbps at a 1080p@60 camera. It uses a small, local, self-trained CNN AI model to find the code's corners. Additionally sending/decoding is accelerated on a GPU for speed. For error correction, I am using LDPC as well as Wirehair as my fountain code. Using a signed pilot system to track frame desynchronization, this app is capable of stable high transfer rates at 60fps and appears to defeat the the rolling shutter problem that optical camera communication infamously suffers from.

How it is used: https://www.youtube.com/watch?v=F-Mie4m9gBQ

Find the source code on GitHub! https://github.com/FNWTalon/lizard

cryptographical··on Why tech bosses keep sharing their manifestos about AI
Ai is good at replacing services (e.g cashier, research assistant, etc). But it should never replace friends, as it's too predictable. I discuss projects with chatgpt all the time, but I never talk about non-research stuff unless I want it to generate italian brainrot.
cryptographical··on Why tech bosses keep sharing their manifestos about AI
Ai is wonderful but it should never replace friends. I detest Mark Zuckerberg's claim that AI will replace friends, that's simply not happening. But AI is wonderful at tasks like upscaling or even meme generation.
cryptographical··on Working with AI Feels More Like Leadership Than Coding
It feels like controlling an infinite genie. if you control it well, it is extremely powerful, but it will take anything literally in many cases. But if you master it, and treat it as a compiler of intent, using Plan mode appropriately, you can accelerate and punch far above your weight class.
cryptographical··on AI in drug discovery – what it is, where we stand and the path forward
need one for brain plasicity. it would be nice to be able to easily learn a foreign language or musical instrument naturally.
cryptographical··on Google is making private AI practical with homomorphic encryption
Yeah, for simple calculations on medical data or whatnot, FHE is a highly useful tool. I do wonder, will indistinguishability obfuscation or witness encryption ever be a viable scheme?
cryptographical··on Google is making private AI practical with homomorphic encryption
all we need now is indistinguishable obfuscation