Scientists trace objects behind a wall using WiFi signals - Interesting Engineering

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Scientists trace objects behind a wall using WiFi signals (https://news.google.com/rss/articles/CBMiZ2h0dHBzOi8vaW50ZXJlc3RpbmdlbmdpbmVlcmluZy5jb2 0vaW5ub3ZhdGlvbi9zY2llbnRpc3RzLXRyYWNlLW9iamVjdHMt YmVoaW5kLWEtd2FsbC11c2luZy13aWZpLXNpZ25hbHPSAQA?oc =5) Interesting Engineering


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