The TrewGrip keyboard
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CES 2014: Back-to-front keyboard for tablets

7 January 2014 Last updated at 12:56 GMT

The BBC's North America technology correspondent Richard Taylor gets a demonstration of the TrewGrip mobile keyboard at CES 2014.

They keyboard attaches to a tablet and is operated by typing on a Qwerty-style keyboard on the back of the device.

Follow Richard Taylor on Twitter @RichTaylorBBC