Have you ever wondered how we will manage the huge amounts of data transfer in the future? LiFi or light fidelity is one option for faster speeds. This technology uses LED (light emitting diodes) to 224Gbps.
How does it work?
So we know it needs light, that’s a constant stream of light into an led bulb with a the photo-detector plus a signal processing element to convert that data into readable content. The stream of light is dimmable and dipped up and down at incredible speeds to beam that data. This dipping and dimming is not noticeable to the human eye. Those tiny changes of the led bulb are then converted by a receiver into an electrical signal that can then be read as binary data that can be read by our devices. They then can show this as web content, video, and pictures.
Li-Fi vs Wi-Fi
So why aren’t we all getting Li-Fi fitted? Its fast, clean and efficient. Well the first hurdle is that it requires a constant stream of light, the Li-fi cannot stream through walls like Wi-Fi. You would need special LED bulbs throughout your home and the lights would need to be on 24/7.
However, there are some occasions when the use of Li-Fi could help, like with the Internet of Things (link) as the items in your home could communicate faster and then their data can be transferred passed on using WiFi for the rest of the journey.
Li-Fi is more secure than Wi-Fi and even when its reflected off surfaces it could still achieve 70Mbps, still fast enough for most applications.
So who is looking at Li-Fi?
There are already pioneers in this technology, PureLiFi have collaborated with a lighting company to produce two products available already on the market. A ceiling unit and desktop unit, which connect via USB to provide light and connectivity.
One area of investment is in the idea that as you enter a shop, they will be able to send information to your phone using this technology, without you needing to log onto their Wi-Fi.
According to one source, Apple are said to be looking at Li-Fi for their iPhones.
So will Li-Fi take off, we’ll just have to wait and see…