| 摘要 |
A method, apparatus, system, and computer usable program product for identifying a usage of an item in a storage unit. The process identifies an item in the storage unit to form an identified item. The process determines a location of the identified item based on location data received from a set of location sensors. The process associates the identified item with a current mass, wherein the current mass of the identified item is calculated based on mass data received from a set of mass sensors associated with the location of the identified item; and the process determines a depletion of the identified item based on the current mass and a non-depleted mass for the identified item.
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