The owner of O2 and Movistar launches an app capable of making calls over the internet like rivals such as Skype.

A paralysed woman completes the London Marathon in a "bionic" suit - 16 days after starting the race.

A 'ghost town' is being built in America to test out the latest technology, such as renewable energies and terrorism security systems.

Chinese firm Proview's case against Apple over a dispute involving rights to the iPad name is dismissed by a court in the US.

Twitter objects to a US court order ordering it to hand over old messages posted by a Occupy Wall Street protester.

Plans to make it easier for the police and security services to monitor e-mails and telephone are unveiled but with promises of "strict safeguards".

An augmented reality device shows how two users could share objects on a tabletop while based at different locations.

Two teenagers are arrested in Norway following an attack on Britain's Serious Organised Crime Agency.