Li-Fi: Connect to the Internet using an LED bulb
- An ordinary off-the-shelf LED bulb connected to an device, which in turn is connected to the internet.
- Internet data flows in via the device into the bulb, and is carried by light waves.
- At the other end, light waves carrying internet data falls on a receiver or a dongle which is connected to the computer.
- Visible light spectrum is available in plenty, unlicensed and free to use.
- Double benefit of a bulb giving us light as well as internet access
- Low interference leads to very high data speed
- Li-Fi works under water as well
- Not harmful, unlike RF that can interfere with electronic circuitry
- Light won’t pass through walls, making eavesdropping nearly impossible
- LED illumination is already efficient and data transmission needs very little additional power.
- It can achieve about 1,000 times data density of Wi-Fi, since light can be contained in an area
- July 2011: Prof Harald Haas coins Li-Fi at TEDGlobal
- Jan 2012: PureLifi founded
- Sept 2013: Launch of first product Li-1st
- Dec 2014: Second product Li-Flame developed
- Nov 2015: Prof Haas demonstrates Li-Fi using solar cells at TEDGlobal
- Dec 2015: Latest product LiFi-X developed