Storage containers, bins and devices

A storage system comprising:

• a first set of parallel rails or tracks and a second set of parallel rails or tracks extending substantially perpendicularly to the first set in a substantially horizontal plane to form a grid pattern comprising a plurality of grid spaces;
• a set of uprights, the uprights supporting the rails or tracks, the uprights and rails or tracks together defining a framework;
• a first container for storing at least one item within the storage system;
• and
• a delivery container arranged within the framework and configured in the system to be filled with items and removed from the framework for delivery to a customer;
• wherein the first container includes:
• a configuration for placement beneath the rails or tracks and within the storage system framework, a part of said first container being configured to occupy a space below a grid space;
• means for transferring at least one item, once placed in the first container, from the first container directly to the delivery container, the means for transferring at least one item including a portion of the first container movable from a first closed position to a second open position such the at least one item once placed within the first container is moveable from the first container to the delivery container;
• and
• at least one load handling device, the load handling device having lifting means for lifting the first container from beneath the grid and transporting it to a position above the delivery container, the load handling device including a sensor for monitoring accuracy of positioning of the at least one inventory item in the second container on its deposition from the first container.