LiFi technically called as Light Fidelity, is an all new wireless communication technology similar to WiFi( which we are already familiar with 🙂 ). The recent buzz talked about over internet these days, LiFi is an altogether different implementation of an existing technology.
WiFi as we know use Radio waves for communication and data transfer, but LiFi will be using Light waves to transmit data.
What is LiFi?
Wikipedia defines LiFi as
Li-Fi (Light Fidelity) is a bidirectional, high speed and fully networked wireless communication technology similar to Wi-Fi. The term was coined by Harald Haas and is a form of Visible light communication and a subset of optical wireless communications (OWC) and could be a complement to RF communication (Wi-Fi or Cellular network), or even a replacement in contexts of data broadcasting. It is so far measured to be about 100 times faster than some Wi-Fi implementations, reaching speeds of 224 gigabits per second.
But in simple words LiFi is a mode of data communication which uses Light waves to transmit data to the receiver at ‘lightening’ fast speed. Similar to our TV remotes which send signals to TV receiver in form of high speed flickers of Infrared light beams.
How it works?
The LiFi will have a transmitting end usually designed with LEDs which sends data to the receiver which then converts and aplifies the information before sending it to the user. This method can be exploited to get very fast internet connections which will be specific to the area LED will be spreading light to.
Benefits of LiFi:
- 100 times faster than WiFi.
- Secure ( Since there is no data leakage through walls as in WiFi).
- Transmission of data through light , making it highly focused.
- Less energy loss.
Do i have to keep light ON always to use LiFi?
NOT actually, just dim down the light and you can still use the Internet. 🙂
When is it coming to Market?
LiFi is currently under test and seems like feasible for regular use. We can soon expect LiFi devices in market.
Have a look at how LiFi will work ( Source: ColdFusion )
Here is the TED talk from Harald Haas who coined the term LiFi.
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