US Patent 8201737 Validating item placement

Disclosed are various embodiments for validating item placement. An item is placed on a platform. A load cell is configured to measure weight applied to the platform. Placement of the item in a correct one of a plurality of container positions on the platform is verified. The verification is based at least in part on a positional requirement associated with the item, a weight associated with the item, and the weight detected by the load cell.