Li-Fi Technology.
                     Li-Fi Technology
Li-Fi
• Li-Fi is wireless communication technology which utilizes 
light to transmit data and position between devices. The 
term was first introduced by Harald Haas during a 2011 
TEDGlobal talk in Edinburgh.
Source: Google Images
Leap in technology
• Li-Fi is a wireless optical networking technology that 
uses LEDs for data transmission. In simpler terms, Li-Fi 
is considered to be as a light-based Wi-Fi which uses 
light instead of radio waves to transmit information.
Source: Google Images
Advantages
• Using light to transmit data allows LiFi to deliver a couple 
of advantages such as working in areas susceptible to 
electromagnetic interference like hospitals and aircraft 
cabins and working across higher bandwidth while offering 
higher transmission speeds.
Source: Google Images
Internet at speed of Light
• Li-Fi will be a type of wireless connection that can be up 
to 100 times faster than Wi-Fi. Imagine a world where 
you can connect to high-speed internet by just flicking on 
your light switch
Source: Google Images
How it works?
• It is a system transmitting wireless internet 
communications at very high speeds. The technology 
makes a LED light bulb emit pulses of light that are 
undetectable to the human eye and within those emitted 
pulses, data can travel to and from receivers.
Source: Google Images
Transmission
• The receivers collect information and interpret the 
transmitted data. This is conceptually similar to decoding 
Morse code but in a much faster rate – millions times a 
second. LiFi transmission speeds can go over 100 Gbps, 14 
times faster than world’s fastest Wi-Fi.
Source: Google Images
Disadvantages
• The biggest disadvantage of Li-Fi technology is its 
coverage distance. Since light can’t pass through walls, 
the signal’s range is limited by physical barriers. Li-Fi is 
probably not the replacement of Wi-Fi technology 
anytime soon.
Source: Google Images
Companion for Wi-Fi
• Instead, it is an incredible companion for it. By positioning 
Li-Fi as a complementary technology to Wi-Fi, this 
promising technology will take wireless connectivity to 
new heights. Eventually, Wi-Fi will not be able to keep up 
with the demand of data
Source: Google Images
When will it be launched?
• It has been predicted that LiFi would be released to the 
general public in early 2022. Large mobile companies, such 
as Apple, are also starting to suggest that their future 
devices will be LiFi capable. LiFi is considered to be future 
of the internet
Source: Google Images