Li-Fi (Faster Than Wi-Fi)
Li-Fi is a wireless technology similar to Wi-Fi that allows data to be sent at high speeds using visible light communication (VLC). Li-Fi, a super-fast alternative to Wi-Fi, is finally moving from research labs to the real world after an Estonian startup implemented the technology within a commercial context.
The Li-Fi technology used by Velmenni in the pilots is able to send data at up to 1GBps more than 100-times faster than current Wi-Fi technologies. At these speeds, a high-definition film could be downloaded in just a few seconds.Li-Fi allows for greater security on local networks as light cannot pass through walls, which also means there is less interference between devices. Perhaps the most significant advantage is the speed that the technology offers. Researchers have achieved speeds of 224 gigabits per second in lab conditions.
Li-Fi enables devices to use their in-built stand by LED lights to transmit data. Li-Fi allows for greater security on local networks as light cannot pass through walls, which also means there is less interference between devices. Perhaps the most significant advantage is the speed that the technology offers.
Benefits of LiFi:
- Higher speeds than Wi-Fi.
- 10000 times the frequency spectrum of radio.
- More secure because data cannot be intercepted without a clear line of sight.
- Prevents piggybacking.
- Eliminates neighboring network interference.
- Unimpeded by radio interference.
- Does not create interference in sensitive electronics, making it better for use in environments like hospitals and aircraft.
By using LiFi in all the lights in and around a building, the technology could enable greater area of coverage than a single WiFi router. Drawbacks to the technology include the need for a clear line of sight, difficulties with mobility and the requirement that lights stay on for operation.