A British hi-tech start-up has invented a light bulb fitting capable of acting as the equivalent of a wireless network in the home. PureLiFi, a spin-out from Edinburgh University, is poised to announce new technology that can create a two-way high-speed connection using signals sent by LED lightbulbs for the first time. The company’s creation has attracted the interest of a club of hi-tech investors who are close to agreeing […]