NCPC-Z11 . ANDROID wireless call point works in combination with wrist watch supported by 3G/4G , GPS and Wi-Fi networks.
An person with wrist watch, outside of the premises will be tracked all the time, no matter where he or she goes. Internal aria covered with Wi-Fi does not require SIM card.
Accurate location of the tracked person will be defined by TakeMeWith you tags spread through the interior of the building. Each tag communicate with the person currying a watch or pendant around the neck.