Light Fidelity (LiFi): It is a wireless optical networking technology that uses visible light from LED’s for data transmission. Li-Fi has created a new revolution in wireless communication. A German physicist, Herald Hass keeps on wowing the world with the revelation of data transfer using light. Li-Fi allows an electronic device for connecting to the internet with no wire. It is more secure than wireless fidelity based on the spread of the signal. Li-Fi uses visible light and communication and it is faster compared to radio-waves which is 250 times faster compared to any other broadband.
Below is a table of differences between Gi-Fi and Li-Fi:
| Based on | Gi-Fi | Li-Fi |
|---|---|---|
| Specification authority |
NICTA (National ICT Australia Ltd) |
IEEE (Institute of Electrical and Electronics Engineers) |
| Operation |
GI-Fi technology transmits the data over the air using the millimeter waves. |
Li-Fi transmits data using light intensity modulation. |
| Data transfer rate |
Provides the speed upto 5 Gbps, and more. |
Provides the speed upto 1 Gbps. |
| Frequency of operation |
Li-Fi can achieve the frequency of operation around 60 GHz. |
Li-Fi can achieve the frequency of operation upto 50 THz. |
| Coverage Range or distance |
GI-Fi range up to 10 meters in particular. |
Li-Fi systems can maximum range up to 100 meters depending upon the light intensity and range of that LED. |
| Data Density |
GI-Fi works within the very high dense environment. |
Li-Fi works with the high density environment. |
| Cost |
Gi-Fi is very cheap, costs only 10 $. |
Li-Fi is cheaper compared to Wi-Fi as it uses light. |
| Security |
Data transfer is less secured compared to Li-Fi. |
Li-Fi provides secure data transfer due to the light blocked by the walls. |
| Power Consumption |
Power Consumption is less than 2MW (milli watts). |
Power Consumption is upto 1 MW (milli watts). |
| Primary Devices |
Mobile phones, home devices, electronics, etc. |
Hospital, vehicle and transportation, aviation, etc. |
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