PokeRing: Notifications by Poking Around the Finger
summary
A 3D‑printed smart ring with small solenoids pokes eight equidistant spots around the index finger’s proximal phalanx and is evaluated across three studies (total n=76). Tests compare 10/8/6 actuator layouts, find eight actuators hits the sweet spot (8 ≈ 6 accuracy, 10 much worse), and poking outperforms skin‑dragging by ~14%. A design workshop produces 21 spatio‑temporal patterns; end‑to‑end recognition in semi‑real conditions runs around 78% recognition. Hardware is prototyped as a 3D-printed ring and works, though size and actuator noise remain limitations.
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