Backscatter Tech: No-Electricity Wi-Fi Uses Radio Waves For Energy

This not-so-distant "Internet of Things" will extend connectivity to billions of devices. Sensors could be embedded in everyday objects to help monitor and track everything from the structural safety of bridges to the health of your heart. But having a way to cheaply power and connect these devices to the Internet has kept this from taking off. People are sick of batteries. They are sick of having to change them and they are irritated when they can't change them. In a world of information, there will need to be battery-free sensors. read more

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