Touchless user interface navigation using gestures

A wearable computing device configured to be worn on a forearm of a user, the wearable computing device comprising;

• a display component that displays content cards;
• at least one motion sensor that detects movement of the wearable computing device and generates, based on the movement, motion data that represents motion of the forearm of the user of the wearable computing device;
• one or more processors;
• at least one module operable by the one or more processors to:
• cause the display component to display a first content card of a list of content cards;
• responsive to determining that the user of the wearable computing device has performed a first gesture that includes a supination of the forearm of the user followed by a pronation of the forearm of the user at an acceleration that is less than an acceleration of the supination, output, for display by the display component, a second content card of the list of content cards;
• and
• responsive to determining, based on the motion data, that the user of the wearable computing device has performed a second gesture that includes a supination of the forearm of the user followed by a pronation of the forearm of the user at an acceleration that is greater than an acceleration of the supination, output, for display by the display component, the first content card.

A non-transitory computer-readable storage medium storing instructions that, when executed, cause one or more processors of a wearable computing device to:

• output for display, by a display of a wearable computing device, a content card of a list of content cards;
• receive motion data generated by a motion sensor of the wearable computing device that represents motion of a forearm of a user of the wearable computing device;
• responsive to determining, based on the motion data, that the user of the wearable computing device has performed a first movement that includes a supination of the forearm of the user followed by a pronation of the forearm of the user at an acceleration that is less than an acceleration of the supination, output for display, by the display component, a next content card of the list of content cards;
• and
• responsive to determining, based on the motion data, that the user of the wearable computing device has performed a second movement that includes a supination of the forearm of the user followed by a pronation of the forearm of the user at an acceleration that is greater than an acceleration of the supination, output for display, by the display component, a previous content card of the list of content cards.

A method comprising:

• displaying, by a display of a wearable computing device, a content card of a list of content cards at a current hierarchical level of a plurality of hierarchical levels;
• receiving, by the wearable computing device, motion data generated by a motion sensor of the wearable computing device that represents motion of a forearm of a user of the wearable computing device;
• in response to determining, by the wearable computing device and based on the motion data, that the user of the wearable computing device has performed a first movement that includes a lowering of at least a distal end of the forearm of the user away from a head of the user followed by a raising of at least the distal end of the forearm of the user toward the head of the user, displaying, by the display, a content card of the list of content cards at a lower hierarchical level of the plurality of hierarchical levels than the current hierarchical level;
• and
• in response to determining, by the wearable computing device and based on the motion data, that the user of the wearable computing device has performed a second movement that includes a supination of the forearm of the user followed by a pronation of the forearm of the user at an acceleration that is greater than an acceleration of the supination, displaying, by the display, a previous content card of the list of content cards.