The latest stories from the Technology section of the BBC News web site.

Google acquires kite-power firm
Google has acquired a US start-up that generates power using turbines flying on robotic tethered kites.

BBC shows off 'script-changing' radio
A radio that has the ability to alter scripts and other content depending on its location and other factors is being developed by the BBC.

Court battle for EA over game faces
A former college football player has won the right to sue Electronic Arts for using his likeness without permission.

J-Lo to create Latino mobile shops
A chain of mobile phone stores aimed specifically at the Latino market is to be opened by singer and actress Jennifer Lopez

Backlash over Xbox pre-owned games
Microsoft faces a backlash from some gamers after it emerges the company may charge a fee to play pre-owned games on its new Xbox One console.

Twitter boosts security after hacks
Micro-blogging site Twitter says it is bringing in a two-step login for users to beef up security following recent high-profile breaches.

Gif inventor says pronounce it 'Jif'
The inventor of the Gif image format says it should be pronounced Jif, despite what the Oxford English Dictionary says.

US report warns on China IP theft
The theft of US intellectual property is "unprecedented" and costing billions, a US report says, pointing to China as the main culprit.

Couple's £163,000 phone bill shock
A couple who own an electrical firm had a shock when they received a mobile phone bill for £163,000, then fought for months to have the debt cleared.

Hewlett-Packard shares jump 12%
Hewlett-Packard shares leap in after-hours trading, despite quarterly results showing a seventh consecutive fall in sales.