The things are getting light through Li-Fi. The data can be transferred through light is not a new information for us. But the light that we see on the roof will give you the data. It sounds different from the old story. Th new technology is named as Li-Fi.
This is very similar to Wi-Fi but it uses the light to transfer\ data from one device to other. The LED lamps are used for the purpose. And the dimming of the light is not visible to the human eye due to the speed the have. This all happens in the nano second scale. the data transfer is done at a rate of 70 MBPS. maximum data speed.
It is very useful at the radioactive spots because the radio frequency used may interfere the reaction. The device need not be in the direct line of sight it also can use the reflected light. But the device should be in the sight. So the range of the new thing is little bit less. But it ensures the protection from hacking from the other door.
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