this post was submitted on 09 May 2025
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https://www.idquantique.com/random-number-generation/products/quantis-qrng-pcie/
Edit: the actual way they do it is from things like sensor noise, it's practically impossible to predict the random noise on a temperature sensor for example
Edit2: oh wait it's literally just an led and cmos sensor lol (well i guess there's a lot of processing etc but still)