Electronic apparatus, systems, components and accessories for locating, identifying, monitoring and tracking personnel and articles, namely, positioning tags, encoded personnel identity badges, encoded patient bracelets, asset tracking tags, and temperature sensors with radio, low frequency and infrared communication capability; electronic wireless input modules for reading data from personnel and article monitoring devices and systems; electronic controllers for personnel and article monitoring devices and systems; electronic RFID readers and RFID receivers for personnel and article monitoring devices and systems; electronic exciters in the nature of radio and infrared exciters for personnel and article monitoring devices and systems; electronic messaging systems for personnel and article monitoring devices and systems, comprised of electronic controllers, computer hardware, computer software and transmitters for the transmission of messages; electronic power and software interface adaptors for personnel electronic personnel monitoring systems comprised of radio, low frequency and infrared communication devices, input modules, controllers, readers and receivers, and exciters; electronic transmitters for personnel and article monitoring devices and systems; electronic display units in the nature of LCD displays and video displays for personnel and article monitoring devices and systems; electronic input/output modules for reading inputs and outputs of data from, and for activating personnel and article monitoring devices and systems; power and data junction boxes; power adapters; electronic magnetic field meters