Ring device having an antenna, a touch pad, and/or a charging pad to control a computing device based on user motions

An apparatus, comprising:

• a housing having a c-shape and configured to be wrapped round a finger of a user, the housing having a central axis in a lengthwise direction of the finger, the housing having an opening or joint along a circumferential direction, the housing having:
• an upper portion above a first plane passing through the central axis and the opening or joint, and
• a lower portion below the first plane;
• a Bluetooth antenna configured in a contiguous portion of the housing that connects the upper portion and the lower portion, wherein the Bluetooth antenna is disposed in an outer portion of the housing that is further from a center of the housing than an inner portion;
• and
• a spring element that extends from one end of the housing and configured to grip the finger of the user when the housing is wrapped round the finger of the user.

An apparatus, comprising:

• a housing having a c-shape and configured to be wrapped round a finger of a user, the housing having a central axis in a lengthwise direction of the finger, the housing having an opening or joint along a circumferential direction, the housing having:
• a first section spanning from the opening or joint up to 90 degrees in the circumferential direction;
• a second section spanning from the opening or joint up to 135 degrees in the circumferential direction opposite to the first section;
• and
• a third section connecting between the first section and the second section contiguously;
• an inertial measurement unit having a micro-electromechanical system (MEMS) gyroscope;
• a Bluetooth antenna configured in an outer portion of the third section at a location that is farthest from the opening or joint, the Bluetooth antenna configured to transmit orientation data of the apparatus as measured using the MEMS gyroscope;
• a spring element that extends from one end of the housing and configured to grip the finger of the user when the housing is wrapped round the finger of the user;
• and
• a touch pad configured on an outer portion of the first section.