But the random number generator they built was, they reasoned, still useful. So Haahr made it public at random.org, where it has been churning out random numbers ever since. It gets a lot of visitors.

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

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 ...

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

A new random number generator that uses a micro laser developed by researchers at NTU Singapore is a hundred times faster than computer-based systems.