Abstract: A method of 2-way data and voice communication with a user utilizing a portable device having a cellular transceiver module, a GPS module and an emergency call button is disclosed. The method includes determining whether the portable device is in proximity of the base station; powering down the GPS, placing the portable device into sleep mode and sending a signal to the base station indicating that said portable device is in proximity of the base station when the portable device is in proximity to the base station; and activating and fully powering the cellular transceiver module and activating and fully powering said GPS module when the portable device is not in proximity of said base station.

Abstract: A method of 2-way data and voice communication with a user utilizing a portable device having a cellular transceiver module, a GPS module and an emergency call button is disclosed. The method includes determining whether the portable device is in proximity of the base station; powering down the GPS, placing the portable device into sleep mode and sending a signal to the base station indicating that said portable device is in proximity of the base station when the portable device is in proximity to the base station; and activating and fully powering the cellular transceiver module and activating and fully powering said GPS module when the portable device is not in proximity of said base station.

Abstract: The computerized system provides a method to track Alzheimer's patients and other diseases that affect the patient's ability to contact and communicate their location or vital information to their caregivers. The system applies an electronic tag to each patient of a multiplicity of patients or only to non-confined patients and employs a computer to maintain information about their location and well being. Use is made of a global positioning system to locate a lost patient as well as to track movements of the patient. A history of the movement of the patient may also be plotted on a map. Additional components of the tag gather and relay information about the patient's condition and other environmental data. In addition, the use of a an additional external transmitter keeps the wearable tag in a low power “sleep” mode when it is in range, preserving the internal battery and only consuming power when the tag moves out of range of the external transmitter.

Abstract: The computerized system provides a method to track Alzheimer's patients and other diseases that affect the patient's ability to contact and communicate their location or vital information to their caregivers. The system applies an electronic tag to each patient of a multiplicity of patients or only to non-confined patients and employs a computer to maintain information about their location and well being. Use is made of a global positioning system to locate a lost patient as well as to track movements of the patient. A history of the movement of the patient may also be plotted on a map. Additional components of the tag gather and relay information about the patient's condition and other environmental data. In addition, the use of a an additional external transmitter keeps the wearable tag in a low power “sleep” mode when it is in range, preserving the internal battery and only consuming power when the tag moves out of range of the external transmitter.