SAY BYE BYE TO WIFI AND HII TO LIFI

WI-FI is susceptible to hackers which is not the case on LI-FI as light waves cannot penetrate through walls and buildings, so, they remain within the buildings and thus maintaining the security of data.

We see that how data is secure within the building. Now we can say that with the help of this future technology, data is fully secure than WI-FI.
We can use this technology in banks where data must be safe. Experienced hackers easily hack the bank account details using WIFI. But with LIFI, we make data secure which is not hack by any hacker.
We can use LI-FI in operation theatre where WI-FI is banned due to the radio waves.
Medical technology advanced a lot but still it is far behind the wireless world. Operating rooms have banned WI-FI owing to radiations concerns. If WI-FI is used in hospitals, interference from mobiles and computers can block the signals coming from monitoring equipments. Thus LI-FI can overcome these problem as the operating rooms make use of light.http://www.youtube.com/watch?v=2hBpVrSI7Xo

HOW LED TRANSMIT THE DATA WITH ITS HIGH FLICKERING RATE

This brilliant idea was first showcased by Harald Haas  From University of Edinburgh, UK, in his TED Global talks on VLC. LI-FI is transmission of data through illumination by taking the fiber out of fiber optics by sending data through an LED light bulb that varies in intensity faster than the human eye can follow. He explained, “Very simple, if the LED is on, you transmit a digital 1, if it is off you transmit a 0.

 The LEDs can be switched on and off very quickly, which gives nice opportunities for transmitting data.” So what you require at all some LEDs and a controller that code data into those LEDs. We have to just vary the rate at which the LED’s flicker depending upon the data we want to encode. Further Enhancements can be made in this method like using an array of LEDs for parallel data transmission or using mixtures of red, green and blue LEDs to alter the light’s frequency with each frequency encoding a different data channel. Such advancements promise a theoretical speed of 10 Gbps – meaning you can download a full high definition film in just 30 seconds.
  Since Li-Fi uses just the light, it can be used safely in aircrafts and hospitals that are prone to interference from radio waves. This can even work underwater where Wi-Fi fails completely, thereby throwing open endless opportunities for military operations.It was demonstrated that table lamp that successfully transmit data at speed exceeding 10 Mbps using light waves from LED light to a  computer located below the lamp.
The LED bulb will hold a microchip that will do the job of processing the data. The light intensity can be manipulated to send data by tiny changes in amplitude. This technology uses visible spectrum of light, a part of the electromagnetic spectrum that is still not greatly utilized. In fact the technology transfers thousands of streams of data simultaneously, in parallel, in higher speed with the help of special modulation using unique signal processing technology.

CHINESE SCIENTISTS MADE POSSIBLE FASTEST MODE OF COMMUNICATION:LI-FI

The possibilities of LI-FI technology are numerous but it is still in its infancy. Professor Chi Nan’s research team is presently working in this technology which includes scientist from the Shanghai Institute of Technical physics at the Chinese Academy of Sciences. The technology needs further improvements in microchips designing and manufacturing as well as light communication controls which are in experimental period. Professor Chi’s team is planning to show 10 samples of LI-FI kit at the China International Industrial Fair in Shanghai on 5^th November 2013. When LI-FI will be put to use, it will prove to be and boon for the whole world but there is still a long wave to go to making it commercially successfully.  

LI-FI: THE FUTURE TECHNOLOGY AT THE SPEED OF LIGHT

As we use Wi-Fi in our daily life, we have seen that speed is a major concern. This drawback of lower speed can be overcome with the advent of the new technology known as LI-FI whose speed is normally 1Gbps which can be extended to 10Gbps.Li-Fi is data transmission through LED bulbs.LI-FI refers to a type of VLC technology that delivers a networked, mobile, high speed communication solution in a similar manner like WI-FI. Optical wireless enjoys certain advantages over radio waves like economical cost, high speed, secure which is the reason for it being a popular area of research.