Wi-Fi Backscatter: Using RF signals to power battery-free devices and connect them to the Internet

Can you imagine a world where various devices are interconnected forming a grid so that sharing of data and automation become easy.  This is the concept of Internet of Things in which a wide variety of devices are interconnected with each other wirelessly within the existing internet network.
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Wi-Fi Backscatter: Using RF signals to power battery-free devices and connect them to the Internet