First battery-free mobile phone that uses almost no power
Able to make Skype calls During testing, the team was able to make a number of Skype calls on the handset made of commercial, off-the-shelf components that can receive and transmit speech and communicate with a base station. “We've built what we believe is the first functioning cellphone that consumes almost zero power,” said co-author of the paper, Shyam Gollakota. “To achieve the really, really low power consumption [...]