December 4, 2015 6:46 pm

Introducing Li-fi, a Better Faster Way Than Wi-fi


If Japan has already installed wi-fi in Mount Fuji, then they better consider to change it with Li-fi, the new technology for internet connection which much more faster than wi-fi.

Li-fi first brought to the world by Prof Harald Haas from Edinburgh University, who demonstrated the technology at a Ted conference in 2011. Prof Haas described a future when billions of light bulbs could become wireless hotspots. Watch below video to see Prof Harald firstly demonstrate Li-fi on TED :

Using light instead of radio wave, Li-fi can deliver internet access 100 times faster than traditional wi-fi, offering speeds of up to 1Gbps (gigabit per second). At these speeds, a high-definition film could be downloaded in just a few seconds. A new method of delivering data, which uses the visible spectrum makes Li-fi does not interfere with other radio signals. Therefore, Li-fi is able to use inside of airplane and in other places where interference is an issue. This is how the Li-fi works :

See also : A man with three ears hear using wi-fi



Li-Fi, a super-fast alternative to Wi-Fi, is finally moving from research labs to the real world by Velmenni. Velmenni has begun trialing the technology within offices and industrial environments in Tallinn. Li-Fi allows for greater security on local networks as light cannot pass through walls, which also means there is less interference between devices. Researchers have achieved speeds of 224 gigabits per second in lab conditions. Deepak Solanki, CEO of Velmenni, told International Business Times,:

“We are doing a few pilot projects within different industries where we can utilise the VLC (visible light communication) technology,”

“Currently we have designed a smart lighting solution for an industrial environment where the data communication is done through light. We are also doing a pilot project with a private client where we are setting up a Li-Fi network to access the internet in their office space.”

However, beside the super speed of Li-fi and more secured internet access that Li-fi could offer, there is also a weak point from Li-fi. Due to Li-fi using light as the media to transfer data, Li-fi cannot be deployed outdoors in direct sunlight, because that would interfere with its signal. Li-fi could reach consumers within three to four years ahead.