Simple inventions can transform our lives. Consider this: Can we use light bulbs to transmit data wirelessly?

On TEDTalks, an inventor shows how light from a standard LED bulb can transmit data to a mobile device, in effect acting like a wireless router. When you think about it, the invention is not that revolutionary, since WiFi transmissions use standard radio frequencies, which are simply a different set of frequencies than visible light, both of which are part of the spectrum of electromagnetic radiation. This patent  (OPTICAL FREE SPACE DATA TRANSMISSION US 2011/0069958, by the same inventor, Harald Haas) discloses the use of infrared light (another frequency along the same spectrum) for wireless data transmission in an airplane, describing an invention that would enable safe inflight wireless internet. Somebody tell Alec Balwin to invest.

The use of visible light for data transmission is not new. The first use (also claimed to be the first wireless transmission) was sent by (Canadian inventor) Alexander Graham Bell in Washington D.C. in the year 1880. His patented system was called the Photophone.

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