An inventory control system is described which includes anti-collision, radio frequency identification apparatus or tags affixed to each item of an inventory and including a unique code, an interrogator/reader that generates a field of sufficient range to activate each tag associated with each item of the inventory in communication with a computer. The computer includes a list comprising an identifier for each item in the inventory, the code for the tag associated with each item in the inventory and an item status where the status indicates whether the item is present or absent.