Invention

Wireless data from every light bulb: Harald Haas on TED.com

What if every light bulb in the world could also transmit data? At TEDGlobal, Harald Haas demonstrates, for the first time, a device that could do exactly that. By flickering the light from a single LED, a change too quick to for the human eye to detect, he can transmit far more data than a cellular tower — and do it in a way that’s more efficient, secure and widespread. (Recorded at TEDGlobal 2011, July 2011, in Edinburgh, Scotland. Duration: 12:52.)

Watch Harald Haas’s talk on TED.com, where you can download it, rate it, comment on it and find other talks and performances from our archive of 900+ TEDTalks.