Abstract
Over 50 billion devices to be connected to the internet.156 million emails, 150,000 Skype calls and
over 500,000 comments read and used by every people in a single minute. Most of them are wireless. Radio
spectrum is getting full. Did you ever experience a cricket match in the ground? When you want to upload
a picture you cannot upload it! Because more people use a single tower they cannot supply faster. There
LI-FI kicks in. Instead of using radio waves light waves can be used for communication i.e. LI-FI. Using
LI-FI bandwidth becomes very larger and it is more than 1000 times the size of the radio spectrum. This is
better and it’ll never get full at any time. Light fixture becomes wireless router, gives very fast and very
stable connection to the internet. It is faster that you can play 2 HD Movies and a Skype call at the same
time. As if now it is the great alternative for Wi-Fi, especially where radio waves are not permitted (or)
work poorly. For example: - Hospitals, factories, planes, etc. According to me the main usage of Li-Fi is
that light cannot penetrate through walls that give the additional layer of security to banks and more
governmental organizations get more secured through this technology.
Keywords
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