Visible light communications (VLC) works by switching bulbs on and off within nanoseconds, which is too quick to be noticed by the human eye. The test was conducted in a company called Velmenni in Estonia. It means, Li-Fi can deliver internet access 100 times faster than Wi-Fi by offering a speed of upto 1GBps (Gigabite per second). Merely to fit that into perception, that is 100 times faster compared to regular Wi-Fi speeds that we now have around the world. The technology could be rolled out to consumers within the next 3 to 4 years. Also, Wi-Fi connectivity causes security vulnerability for data and storage and even though Li-Fi is a challenge to achieve at present, it seems to be positive news.
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Professor Harald Haas of the University of Edinburgh in United Kingdom is the original founder of Li-Fi, who coined the term in 2011. Several companies are experimenting with Li-Fi.
How Does Li-Fi Work? The data was received by a binary code by flashing LED lights on and off by creating a morse code.
“Currently we have made a good illumination answer for a professional atmosphere where the info communication is done through lighting”.
The technology, which could be commercially available in three to four years, will enable us to outfit our offices, malls or bus stations – just about anywhere that has lights – with LED bulbs that send and receive data and provide illumination at the same time. Because gentle can not pass through surfaces, think about it, that you don’t have to be anxious about your annoying neighbour looking to compromise into your internet and stealing knowledge. Radio signals need permissions and were limited and thus the LED light technology could be explored.
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But the technology also has its drawbacks – most notably the fact that it can not be deployed outdoors in direct sunlight, because that would interfere with its signal. Li-Fi is a subset of optical wireless communications (OWC) and can be a complement to RF communication (Wi-Fi or Cellular network), or a replacement in contexts of data broadcasting.
