In what is simultaneously a ridiculous PR stunt and a fun use of retro tech, O2 has unveiled a range of phones built into vintage shoes.The 'Walkie Talkies' have been built by the designer Sean Miles.The phones are fully functional, and all derive from the era of bad screens, no apps and Snake.

Google Glass is the attempt to make wearable computing mainstream, and it's effectively a smart pair of glasses with an integrated heads-up display and a battery hidden inside the frame.

Wearable computing is not a new idea, but Google's enormous bank account and can-do attitude means that Project Glass could well be the first product to do significant numbers.