Small ground-based transmitters that mimic GPS satellites help receivers find their position with high accuracy.
Tom SimoniteFollow @twitterapi
IT Editor, Software & Hardware
I’m MIT Technology Review’s IT editor for hardware and software and enjoy a diverse diet of algorithms, Internet, and human-computer interaction with chips on the side. Working in our San Francisco office, I cover new ideas about what computers can do for us, whether they spring from tech giants, new startups, or academic labs.
My journey to the West Coast started in a small English town called Wantage and took in the University of Cambridge, Imperial College London, and five years writing and editing technology news coverage at New Scientist magazine.
Tom Simonite's Stories
Only a few handsets contain contactless payment chips, but many more devices could use sounds to achieve the same purpose.
A phone can locate you indoors to within a few paces by combining Wi-Fi signals and the jolt of your footsteps.
After years of research, Microsoft hopes to provide a system that lets data communications weave through TV frequencies.
The company's mobile operating system can now control everything from lighting to gym equipment.
Allowing a phone to flip between two modes could help keep company data safe.