Systems for navigating user interfaces on multiple devices based on spatial orientations of a user's hand, and method of use thereof

A method comprising:

• receiving, from one or more sensors of a wrist-wearable device, data associated with performance of an in-air hand gesture by a hand of a wearer of the wrist-wearable device, wherein:
• in accordance with a determination that the data indicates that the hand of the wearer is in a first orientation when the in-air hand gesture was performed, causing performance of a first operation at the wrist-wearable device;
• and
• in accordance with a determination that the data indicates that the hand of the wearer is in a second orientation when the in-air hand gesture was performed, causing performance of a second operation at a head-wearable device.

A wrist-wearable device, comprising:

• a display;
• one or more processors;
• and
• memory comprising instructions that, when executed by the wrist-wearable device, cause performance of operations for:
• receiving, from one or more sensors of the wrist-wearable device, data associated with performance of an in-air hand gesture by a hand of a wearer of the wrist-wearable device, wherein:
• in accordance with a determination that the data indicates that the hand of the wearer is in a first orientation when the in-air hand gesture was performed, causing performance of a first operation at the wrist-wearable device;
• and
• in accordance with a determination that the data indicates that the hand of the wearer is in a second orientation when the in-air hand gesture was performed, causing performance of a second operation at a head-wearable device.