Gadgets & Gizmos: Autonomous cars and TVs, WiFi replaces security cameras & 3D-printed biscuits

Steve Caplin explains how difficult it will be to flag down the new self-driving taxis on London streets. However, you can now get a mobile TV that you can summon. Which? managed to get a fake listing for 10, Downing Street on booking.com. Scientists have worked out how to use WiFi to identify people without cameras. A new robot designed for household tasks is incredibly slow. A crowd-funded solar bike has the panels inside both wheels. Nasa has developed 3D-printed biscuits made of plastic, but the scientists who've developed them aren't allowed to taste them. And the Science Museum is about to host an attempt by Star Trek fans for the largest simultaneous Vulcan salute. Learn more about your ad choices. Visit podcastchoices.com/adchoices