A quantum random-number generator has been developed that uses classical cryptography to certify that its output was produced by a quantum process.

The company needed some truly random numbers for its security solutions, so it turned to some groovy old tech: lava lamps. In their office is a wall of 100 lava lamps monitored by cameras.

Getting a strange text message from someone you don't know may seem like a mistake, but it could be more sinister. It could be the start of a scam.

Use the RANDARRAY() dynamic array function to return random names or other text in Microsoft Excel.