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3D-printed objects connect with Wi-Fi – no electricity required

Researchers from the University of Washington have 3D-printed objects and sensors that are able to communicate with Wi-Fi devices such as smartphones or computers without needing to be powered by batteries or a wall socket. Examples include an attachment that can sense when laundry detergent is about to run out and place an online order for more, an anemometer and a connected test tube holder.
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