From Wi-fi to Li-fi-The Future of Data Connectivity

Still struggling with a low wi-fi connectivity at a remote location? Do not worry, the future of data connectivity is here – LiFi. Yes, you read it right, “Li-fi.” So what is Li-Fi technology?

What is Li-Fi?

Well, Li-fi is a wireless optical networking technology which uses light emitting diodes (LEDs) for data transmission (Techtarget, 2018). The innovative technology is designed to utilize LED bulbs already in use in office and outdoor settings by placing a chip that modulates the light imperceptibility for the purpose of data transmission. Data is transmitted by LED bulbs and received by photoreceptors.

Li-fi stands for light fidelity. The technology was proposed by German physicist Harald Hans in the year 2011.

How fast is Li-Fi?

The earlier models of Li-Fi have been able to generate speeds of 150 megabits per second (MBPS). In laboratory settings, speeds as high as 10 gigabits per second (GBPS) have been attained.

Comparing Wi-Fi and Li-Fi

Li-Fi Wi-fi
Higher speed than wi-fi Lower in comparison to Li-fi
Higher security since data can’t be intercepted without line of sight Security issues are common with data hacks happening everyday
No chances of nearby network interference Network overlap affects performance
Unaffected by radio interference Affected by radio signals
Best for aircrafts and hospitals since it does not interfere with other electronics Not recommended for aircraft and hospital settings due to interference with working of technical devices
Wider coverage than a wi-fi router Limited coverage area

Limitations of Li-Fi

So, if all is good, what is holding back the technology use?

  • Li-fi needs a clear line of sight
  • Lights need to be switched on for operation
  • Mobility is an issue

Who should use Li-Fi?

  • Areas that have low wi-fi connectivity or where wi-fi fails
  • Aircrafts and hospitals where li-fi does not interfere with other devices
  • A better disaster management through quick communication/connectivity
  • Public accessibility of internet at all possible locations, including streets (through street-lights).


Techtarget. (2018). Li-fi. Retrieved from Techtarget:

Categories: Networking, Technology

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