Abstract: A location tracking system is provided for tracking the location of a child or other individual. The location tracking system includes a location server and one or more location tracking devices. Communication protocols are provided for communications between the location server and the location tracking devices. The communication protocols provide a low complexity and low cost solution for location tracking applications.

Abstract: This disclosure relates to bands for wearable devices. In an aspect, the band includes a support structure with an antenna disposed thereon. An electronics unit is coupled to the support structure. The band can include an opening that surrounds the support structure. The band can also include an electronics casing that surrounds the electronics unit. The band can be removed from the support structure and the electronics unit.

Abstract: This disclosure relates to antennas for wearable devices. In an aspect, the antenna includes an active portion that includes conductive traces that send and receive radiofrequency communication signals. The antenna also includes a ground plane. The antenna includes a spacer that provides separation between the active portion and the ground plane portion.

Abstract: An electronic device having a unique interface between the electronic circuitry of the device and an antenna that is external to the device and located in a band. The antenna functionality is achieved externally in the band and includes a conductive path from one or more components of the device to the antenna in the band. The conductive path may extend through an exterior housing of the device to electrically connect the one or more components and the antenna.

Abstract: This disclosure relates to antennas for wearable devices. in an aspect, the antenna includes an active portion that includes conductive traces that send and receive radiofrequency communication signals. The antenna also includes a ground plane. The antenna includes a spacer that provides separation between the active portion and the ground plane portion.

Abstract: A system of remotely monitoring the sound level at the location of a monitored person. The system includes a first device positioned with a monitored person, a monitoring server that is a hub for communication within the system, and a second device for a monitoring person that is remote from the first device and the monitored person. The first device is configured to detect the occurrence of sound exceeding a sound threshold. The first device then places a call to at least one of the monitoring server and the second device indicating that the sound threshold has been exceeded in the area of the monitored person.