Li-Fi was first used by Harald Haas, during a TED talk, in 2011. Haas is a physicist, and was discussing the idea of using lightbulbs as routers. The main concept behind Li-Fi is to use visible light communication, also known as VLC, instead of radio waves which are what Wi-Fi routers use. This would allow data speeds to become considerably faster, as well as more secure. During tests, Li-Fi even achieved a data transfer speed of 1Gbps. So, what can we use Li-Fi for in our everyday lives?
Streaming
Through the combined use of LEDs, Li-Fi will allow us to access just about anything online with much greater speed than conventional Wi-Fi. This means 4K streaming services like Netflix and Amazon Video will be able to easily retain their fidelity through the wireless technology, reaching any devices that we would like them to. Though Wi-Fi can achieve these results too, Li-Fi would add to the stability of the data stream, due to its theoretical maximum of 224Gbps.
Are There Downsides to Li-Fi?
So far it sounds perfect. A new wireless technology that will allow us to access the Internet and other devices faster than ever certainly sounds like a very good deal. But there are downsides to Li-Fi, mainly the fact that it runs on light. This means that the lights transmitting data to our phones, tablets, televisions and Chromecasts will have to be on at all times; no more curling up on the couch to watch some late-night TV. It’s the same during the day, too. You’ll need to have lights on throughout the day if you want to make use of the new Li-Fi technology. As well as needing to be on around the clock should you wish to use it, Li-Fi also can’t pass through walls, unlike Wi-Fi. So, you’ll have to have a lot of bulbs set up around your home, and of course, they’ll all have to be turned on.
Is It Worth It?
The positives of Li-Fi are notably the speed of the data transfers and its ability to connect to multiple devices and work in conjunction with the Internet of Things. Right now, it’s possibly just too early for this technology to enter the mainstream, especially with over 60% of people using Wi-Fi at home; it would mean switching the whole system if someone wanted to use Li-Fi instead. As well as this, the fact that it can’t pass through walls is a major issue that will need to be overcome, as most houses just aren’t open enough to allow Li-Fi to really shine.
