New smart cup sticker delivers instant vitamin C readings from fingertip sweat
SMRTR summary
Engineers at UC San Diego developed a battery-free sticker that attaches to drinking cups and measures vitamin C levels from fingertip sweat when users grip the cup. The device harvests power from sweat to analyze health data and wirelessly transmit results, offering a low-cost alternative to traditional $50 blood tests.
SMRTR provides this summary for quick context. The original article belongs to Interesting Engineering.
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