This is very interesting, I love exploring all the "weird" sources of entropy such as random number generators based on background radiation (easy to build if y

This is very interesting, I love exploring all the "weird" sources of entropy such as random number generators based on background radiation (easy to build if you don't mind playing with high voltage), ones based on radio white noise (easily tampered with) and others. However my favorite is probably: a Nokia N9 + a laser pointer: https://www.sciencealert.com/physicists-have-created-a-quantum-random-number-generator-from-an-old-nokia-phone https://www.sciencealert.com/physicists-have-created-a-quant...