Tracking Apparatus

Apparatus for tracking the relative location a plurality of individuals for providing information to the individuals, the apparatus comprising:

• a plurality of wireless network devices each arranged to be carried by one individual of the plurality of individuals;
• a wireless network communication network for communication with the wireless network devices;
• each wireless network device having a location detection system for detecting a current location of the wireless network device while being carried;
• a server providing a downloadable program which can be communicated to a selected plurality of the wireless network devices for controlling operation of the wireless network device;
• a server having an operating program in communication with the network;
• the server being arranged to communicate through the network with each of the wireless network devices having the downloaded program to obtain repeatedly from those wireless network devices an indication of the current location of the respective wireless network device;
• the server being arranged to detect from said indications of the current location when any two or more of those wireless network devices have the location thereof within a predetermined distance;
• the server being arranged to communicate through the network a signal to at least one of said two or more of those wireless network devices when the location thereof is within said predetermined distance.