Google Glass frames
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Google Glass: Is it ready to set the trend?

15 May 2013 Last updated at 22:41 BST

The next big step in mobile computing, according to the internet giant Google, is a computer integrated into a pair of spectacle frames.

The new Google Glass product allows the wearer to take pictures, send messages and search the web on the move, combining the visible information with a view of the world around them.

Some campaign groups are wary of the implications that the Glass and similar devices will have on privacy.

Rory Cellan-Jones reports.