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    Researchers at Penn State have developed a low-cost, wearable sensor using pencil-on-paper technology. This approach involves depositing graphite (pencil

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    • One more step towards creating low-cost digital health sensors, or even digital tattoos. It employs a silica hydrophobic coating to repel water, and the researchers also made it flexible so that it can conform to the skin without incurring damage. https://t.co/dy60qxVExl