Detecting and collecting quantum noise in semiconductors is nothing exotic. Johnson-Nyquist noise (thermal noise across a resistor or within a capacitor) is rel

Detecting and collecting quantum noise in semiconductors is nothing exotic. Johnson-Nyquist noise (thermal noise across a resistor or within a capacitor) is relatively easy to measure within an integrated circuit, and is how Intel's RDRAND, Via's true randomness instructions, etc. work. Another cheap option is to reverse-bias an LED, paint it black, and measure the leakage current, affected by both Johnson-Nyquist noise and redioactive decay / cosmic rays. There's little to no excuse for these slot machines not including at least a crude quantum noise collection circuit. Collecting quantum noise in a circuit is nothing exotic and only requires a hand full of transistors and a couple of capacitors. I'm a bit sad that ARM didn't include a quantum noise instruction in the basic arm64 instruction set. On a side note, it's a shame that WiFi and BlueTooth chipsets don't all have a linear feedback shift register accumulating radio noise. They're already measuring noise and detecting bit errors. With only a few extra transistors, they could be made to expose radio noise to the kernel for use in /dev/urandom and friends.