For that you’ll need a true random number generator (RNG), and this open-source hardware RNG uses one of the better methods we’ve seen.

A new laser’s chaotic light beam lets the device generate multiple number sequences at once, similar to throwing multiple dice at a time.

Using a single laser, scientists have built a new system that generates random numbers fast and at scale.

There are a number of other spec and firmware improvements suggested in the writeup, as well as comparison between the Arduino Nano, Arduino Every, and Chinese clones. It’s definitely worth a look!

Technology Engineering Here’s how to generate a truly random number with quantum physics CURBy is available online and free to use. Andrew Paul Published Jun 12, 2025 2:01 PM EDT ...