μDPad turns smartwatch PPG heart-rate sensors into a micro-gesture imaging array
cholz · x · 2026-10-06
μDPad (ACM ICMI) detects microgestures and minimal hand/finger motions on smartwatches by repurposing the multi-channel optical PPG heart-rate sensor as a spatial imaging sensor, fused with the watch IMU — no cameras or finger-worn sensors required.
Related event: μDPad Turns Smartwatch Heart Sensors into Gesture Imagers(3 posts)→
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