With evolving technology, a group of network engineers succeeded in transmitting 800Mbit/s data using red-blue-green-while light LED’s. This technology enables the electronic devices to use light transmission instead of LAN and Wireless router for viewing High definition content.
You are wrong if you think that this technology is going to completely replace LAN and wireless routers. This cant happen because this technology has its own limitations. But, sure they can be used in places like hotels, hospitals , Aeroplanes where its difficult to run cables. It will not be a wonder if it is used in our homes in near future.