‘IT'S THE PERFECT PLACE': LONDON UNDERGROUND HOSTS TESTS FOR ‘QUANTUM COMPASS' THAT COULD REPLACE GPS

Summary from the TLDR newsletter

Scientists in the UK are developing very precise new sensors using quantum mechanics to create a quantum compass - an instrument that exploits the behavior of subatomic matter to accurately pinpoint their locations no matter where they're placed. This could result in a new generation of underground and underwater sensors that can provide location information without interference from weather and other obstructions. Their device could be ready for widespread use in just a few years. It works well in a stable laboratory environment but needs to be tested in more extreme conditions to be turned into a transportable, standalone device that can be used in remote or complex locations.