Li-Fi, An Internet Service 100 Times Faster Than WiFi

Wireless Fidelity or WiFi, as we know it, has changed the way Internet is accessed all over the world. The high-speed connectivity has allowed people from around the world communicate via Internet.

Now, what if we told you that a group of scientists in Estonia has developed a technology that is 100 times faster than WiFi? Seems unbelievable, right? Not at all. A company named Velmenni, based in Tallin, Estonia, has a new internet providing service termed as Li-Fi or Light Fidelity.

Light Fidelity uses Light Emitting Diodes (LED) to transfer signals from the router to the end user device at a speed of 1 gbps (Giga bytes per second).

Here are seven points about Li-Fi you must know:

1. The Li-Fi technology provides 100 times faster Internet than WiFi. It allows speed up to 224 gbps.

2. It requires an LED light source, an internet connection and a photo detector to spread the signals.

3. The Estonian company, Velmenni used this technology to merge the smart lighting system and Internet connectivity to increase its revenue and save energy.

4. Li-Fi uses the same technology as used in standard television or air-conditioner remote control.

5. The infrared beams of a remote control encode signals in light pulses and can transmit around 1,000 bits per second. On the other hand, an LED bulb can transmit signals at a speed of 1,000,000,000 bits per second.

5. The term Li-Fi was first used by Edinburgh University professor, Harald Haas, who demonstrated the system at the Technology, Entertainment and Design (Ted) conference in the year 2011.

6. The Li-Fi does not interfere with other radio signals such as broadband and WiFi. Hence, it can be used on aeroplanes as well. So, no more flight mode!

7. The downside of Li-Fi is that it cannot be used outside the house in daylight, as the sunlight would interfere with the LED signals. Besides, it cannot penetrate through walls like WiFi does, hence, the user needs to be in close proximity of the LED source to get uninterrupted signal.

Source: India Today

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