LED Bulb could connect you to Internet

Imagine an LED bulb doubling as an access point for connecting to the Internet and ordinary light being used as a medium to carry data.A whole new world wherein a bulb would not only give us light but also help us access the Web might not be too far away, if a new technology called Li-Fi (or Light-Fidelity) goes mainstream. The use of the light spectrum for Li-Fi overcomes the issues in traditional wireless communication, like the shortage of spectrum and network disruption because of interference. In Li-Fi, anyone who has access to light can access the Internet. The system also allows users to move from one light source to another without losing their network connection.
What about connecting to the Internet in the night? The stream of photons can be reduced to a minimal level that won’t produce visible light but enough to carry data.

1.What is Li-Fi?

Light-Fidelity is a new technology that uses light waves, instead of radio frequency waves, as a medium to carry data. An improvised LED bulb functions as a router

2.How does Li-Fi work?

A.>An ordinary off-the-shelf LED bulb connected to a device, which in turn is connected to the Internet.
B>The Internet data flows in via the device into the bulb, and is carried by light waves.
C>At the other end, light waves carrying the Internet data falls on a receiver or a dongle which is connected to the computer.

3.Benefits of Li-Fi

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