Techniques are provided for calculating vending machines' service priorities and scheduling the vending machines for service taking into account a number of factors and thresholds (520). In some embodiments, the machines (110) are subdivided into subroutes (320). Each subroute has one or more machines,...http://www.google.fr/patents/US7894938?utm_source=gb-gplus-shareBrevet US7894938 - Vending machine service scheduling
