Tech Tent 57: Don't talk in front of the TV

Samsung's voice-controlled TVs raise worries over privacy as the company warns owners against holding "sensitive" conversations in front of the sets. Kevin Rawlinson visits the Basque Country to try out a handful of language translation apps, and we speak to Luis Von Ahn, the creator of the language-teaching service Duolingo. The UK takes a big step towards trialling automated driverless cars as part of public transport systems in two cities, and announces proposals for the future regulation of autonomous vehicles. Reporter Jane Wakefield takes a ride. And the BBC's Dave Lee considers the question of how random is randomness on the internet?

Presented by Rory Cellan-Jones, with special guest Dr Steven Murdoch, Security Researcher at University College, London.