Professor Harald Haas introduced his Li-Fi system (using an LED lightbulb to power wireless Internet) during a 2011 TED Talk in Scotland. Professor Haas now has a working prototype of the technology that “relies on solar energy to power Internet connections so that an LED light source paired with a solar panel becomes a fully functional transmitter and receiver system for high speed, secure data transfer,” explains Digital Trends. Rather than utilizing cables or radio waves, “Li-Fi uses the nearly undetectable flicker of an LED light to transmit data.” The team envisions practical applications for solar homes, consumer electronics, and Internet of Things devices.