Patent US 8,965,796

The disclosure herein provides system, methods, and devices for tracking and estimating inventory. A real-time inventory system for tracking and estimating inventory of a plurality of items comprises an electronic items database configured to store data relating to the plurality of items; an electronic inventory database configured to store inventory count data; a counting interface configured to receive current count data from a user access point system; a variance calculator configured to access the estimated current quantity to determine a first variance; a prioritization engine configured to analyze the first variance and to increase the first count frequency such that the first item will be counted more frequently than at least one other item.