Logitech has launched a wireless solar-powered computer keyboard that is getting some rave reviews. The keyboard soaks up power when exposed to natural or artificial light, and Logitech claims that once fully charged it can run for three months in total darkness.

Quite why anyone would want to type anything in total darkness evades Recharge - which has tried. Trying to write "Logitech has launched a solar keyboard" came out as "oduefh kwd;ajf ed a solaer lwuvaedd".

But