System for controlling the use of a plurality of items

摘要

This invention is a system for controlling the use of keys and other items which allows only one item to be removed from a plurality of available items and an indicator of who made the selection. The present invention has particular application where a plurality of different people, such as salesmen, have access to a plurality of different items, such as keys. This control is accomplished through the provision of an unlocking means which cannot be relocked until the article contained therein has been replaced.