French company Wysips is working on a new technology which would cause smartphone touchscreens to do double duty as solar panels to recharge phones. The concept is quite interesting as it involves laying an ultra thin transparent photovoltaic film layer on top of the cellphone display screen. The film would capture energy not only from the sun, but any nearby light source. Projected recharge times would be about six hours from direct sunlight and a few hours longer from leaching energy from indoor lights. Wysips is already at work on the second generation of the technology, which looks to provide 30 minutes of talk time after just an hour in the sun.