Frictio: Passive Kinesthetic Force Feedback for Smart Ring Output

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Frictio implements passive kinesthetic force feedback for rotational smart-ring input using a 3D-printed prototype with an inner and outer race, 18 embedded magnets, two hall sensors, a proximity sensor, a brake pad and a motorized rack to vary friction. Six force profiles — Hard Stop, Bump, Ramp-Up, Ramp-Down, Resistant Force, No Force — map to interactions; a lab study shows 94% average profile recognition (94.1% secondary-task accuracy). Prototype works but motor size is a clear miniaturization bottleneck.

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" chapters (9)

1. 0:00Start
2. 0:06Passive Kinetic Force Feedback for Smart Ring Output
3. 2:14Active Tactile Feedback
4. 2:43Kinesthetic Feedback
5. 3:45Design
6. 4:51Fricative Prototype
7. 10:56Secondary Task
8. 15:14Conclusion
9. 16:16Essential Functions