METHOD FOR COMMUNICATING WITH AND/OR FOR OBSERVING AND/OR LOCALIZING OBJECTS AND MODULE USED THEREBY

摘要

Method for communicating with or observing and/or localizing objects, characterized in that it comprises coupling a module (12) with at least a transmitter and a receiver to the object (11) and using in combination at least two communication networks, a first one being a wide area paging network (1), a second one being a cellular telephone network (2) and preferably a third spread spectrum network.