The problem of distributing bathroom tissue to workers presents inherent challenges for any office management system due to the inherent unpredictability of usage--not every facility usage transaction necessitates the use of bathroom tissue, and when it is used, the amount needed (number of squares) may vary quite widely from person to person and, for a given person, from one transaction to the next. This does not even take into account the occasional use of bathroom tissue for unpredictable/creative purposes such as applying/removing cosmetics, beverage-spill management, etc.