A new system called LightLink uses visible light to let developers add sensors, actuators, and modules to commercial ...
Gadget on MSN
Soon, Wi-Fi will measure your pulse
Engineers have shown that a technique to measure heart rate via Wi-Fi signals is effective even with the lowest-cost devices - and no wearables needed.
Aug. 19, 2025 — Lithium battery recycling offers a powerful solution to rising demand, with discarded batteries still holding most of their valuable materials. Compared to mining, recycling slashes ...
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