Abstract: The invention is directed to a location tracking device and auxiliary device for use with a monitoring center for tracking individuals or objects. The location tracking device has position determining circuitry and first wireless circuitry that communicates position data representative of the location of the tracking device to a remote location (e.g., a monitoring station). The tracking device also has second wireless circuitry that communicates with the auxiliary device. The tracking device has at least two operational modes. The tracking device switches operational modes when communication is established between the tracking device and the auxiliary device. The auxiliary device generally has an associated auxiliary device ID and wireless circuitry that communicates the auxiliary device ID to the location tracking device.

Abstract: A methodology determining a response to exposure of a monitored person to a prohibited substance is provided. The methodology includes: first receiving movement data representing movement of the monitored person over time; second receiving an indication that a monitored person has been exposed to a quantity of a prohibited substance; first determining, from the received movement data, movement activity of the monitored person for a period of time before the exposure was detected; second determining a risk parameter based on at least (a) the amount of the quantity of the prohibited substance, and (b) the movement activity; issuing a notice to a supervising authority in substantially real time when the second determining results in a risk parameter that is above a first threshold; and issuing a notice to a supervising authority in non-real time when the second determining results in a risk parameter that is below the first threshold.