A system of a hand-worn input device for a human-computer interface, the system comprising:
- a processor;
- a first sensor operatively coupled to the processor and comprising a single conductive sensor, wherein a sensing surface of the single conductive sensor is disposed over a palmar side of a thumb of a hand of a human user wearing the hand-worn input device,
- a second sensor being operatively coupled to the processor and comprising a sensor grid, the sensor grid comprising:
- a first sensor grid pan over a palmar side of a first or index finger of the hand of the human user, and
- a second sensor grid pan over a palmar side of a second or middle finger of the hand of the human user,
- the first sensor grid pan comprising a first plurality of distinctly identifiable sensor grid locations formed by a first plurality of conductive threads disposed across the first or index finger of the hand in a first direction, and a second plurality of conductive threads, electrically isolated from the first plurality of conductive threads, disposed across the first or index finger of the hand in a second direction different than the first direction, wherein the first plurality of distinctly identifiable sensor grid locations of the first sensor grid pan is defined by respective intersections of respective first and second pluralities of conductive threads,
- the second sensor grid pan comprising a second plurality of distinctly identifiable sensor grid locations formed by a third plurality of conductive threads disposed across the second or middle finger of the hand in the first direction, and a fourth plurality of conductive threads, electrically isolated from the third plurality of conductive threads, disposed across the second or middle finger of the hand in the second direction, wherein the second plurality of distinctly identifiable sensor grid locations of the second sensor grid pan is defined by respective intersections of respective conductive threads of respective third and fourth pluralities of conductive threads, wherein
- the first sensor grid pan and the second sensor grid pan are independently movable relative to each other in multiple directions and independently movable relative to the first sensor in multiple directions to controllably vary the sensor grid,
- the single conductive sensor of the first sensor comprises a grounded conductive fabric such that when the single conductive sensor of the first sensor contacts a conductive thread of at least one of the first and second sensor grid pans of the second sensor, a circuit is completed between the first sensor and at least one of the first sensor grid pan and the second sensor grid pan of the second sensor, and
- the first sensor and the second sensor are configured to complete the circuit in response to a plurality of thumb-finger interactions comprising a thumb-multi-finger interaction resulting in the thumb contacting or rubbing across the first or index finger and the second or middle finger such that the single conductive sensor of the first sensor contacts at least one conductive thread of the first sensor grid pan and at least one conductive thread of the second sensor grid pan.