Abstract: A communications system may include a terminal device that may include a housing, and a conductive radio frequency (RF) terminal receiver carried by the housing for receiving an RF signal conducted via contact with a user. The communications system may also include a user device including a portable housing, and a finger sensor carried by the portable housing and that may include RF excitation circuitry for sensing a finger of the user, and for serving as a conductive RF user device transmitter to transmit the RF signal onto the user to be received by the conductive RF terminal receiver.

Abstract: An emergency location system and method for determining the location of a caller sending an emergency signal without utilizing the bandwidth of the calling system. The system may be readily attached to existing telephone, radio-telephone and similar communicating devices through existing detachable battery packs. Detection of the need to send the locating signal may be based on automatic detection of a predetermined dialing sequence or through a dedicated switch (i.e., a "panic switch") or both.

Abstract: A system and method for monitoring the location and/or presence of an object/person within a desired area includes a mobile base station, a central control center, a mobile signaling device carried by the monitored object/person, and a geolocating means. The mobile base station may be transported to an arbitrary site and retains the monitored object/person within a desired area. The central control center determines the acceptability of the location of the monitored object/person and may raise an alarm condition when the monitored object/person is not within the desired area.