Provided herein is an inventory management system for dispensing products from an enclosure, methods of securing products within the enclosure, use of the enclosure and for maintaining inventory. The inventory management system may include an enclosure having a self-locking door. The self locking door may include a door, a lock located on the door, a strike plate, wherein the strike plate controls the lock, and a sensor configured to detect the presence of a user and wherein the sensor controls the lock.