Wearable Devices and Sexism in Tech

Why the satellite technology used in the hunt for the missing Malaysian airliner isn't quite as sophisticated as we might think. Also, is there really big money to be made in wearable devices? And the experiences of women engineers in Silicon Valley on how they're treated by their male colleagues.

Presented by Rory Cellan-Jones, with special guest Belinda Parmar, CEO of the creative agency Lady Geek, and Dave Lee and Carolyn Rice from the BBC Online technology desk.