1,Security Guard tour system 2,Completely shock resst 3, ... data transfer.CheckpointHUA-90AType:1990A-TM Button,global unique ID(unmodifiable)Physical:Electronic chip stored in ... & durable.Used as patrolman identification.1. Ideal for Security Personnel, monitoring Factories, Offices, Hotels, Car parks, ... , Goods issue, Inventory, Asset tracking etc... Unique Security Guard tour system/contact model