Dielectric-loading detection apparatus

A method of detecting worn and/or unworn status of a wearable host device, the method comprising:

• measuring, by an RF circuit, a first RF characteristic of a first antenna of the wearable host device;
• determining, by a processor, that the first RF characteristic is different from a first reference baseline characteristic;
• measuring, by the RF circuit, a second RF characteristic associated with the first antenna and one or more second antennas of the wearable host device;
• establishing, by a processor, that the wearable host device is not worn by a user by determining that the second RF characteristic is not different from a second reference baseline characteristic;
• and
• turning the wearable host device into a secure state.

A wearable communication device, the device comprising:

• one or more first antennas;
• a second antenna;
• a processor;
• and
• an RF circuit coupled to the one or more first antennas, the second antenna and the processor,
• wherein:
• the RF circuit is configured to measure a dielectric loading based on an RF isolation,
• the processor is configured to detect worn and/or unworn status of the device based on data generated by the RF circuit, and
• the RF isolation is between at least one of the one or more first antennas and the second antenna.