Tech to watch in 2020

Rory Cellan-Jones and special guests look ahead to the technology trends they expect to see in 2020 and discuss ideas for a better internet in the coming year. Plus they’ll preview the gigantic annual CES tech event in Las Vegas. With BBC Online tech editor Leo Kelion, and guests Catherine Miller from Doteveryone and Tom Standage from The Economist. (Image: Stock photo of a service robot helping a man check-in at an airport, Credit: iStock/ Getty Images Plus).