Personnel ibutton 1,Water-resist,strong &durable 2,Entire stainless steel body ... ,water-resistant.strong & durable.Used as patrolman identification.1. Ideal for Security Personnel, monitoring Factories, Offices, Hotels, Car parks, Shopping centers, Leisure ... , Fire Extinguisher checks, Safety, Goods issue, Inventory, Asset tracking etc... Personnel ibutton/metal ibutton for access control management