Works in conjunction with 21 st Century Programming’s ROM system forrecycling companies which is required for this phone app to operate. This phone app is used to scan bar code tags when making shipments and downloading the packing list to the ROM system. It allows for working on multiple shipments at once, as well as being able to take pictures of the shipment and have those pictures upload directly into your ROM System. The inventory system is used for physical inventories and allows for multiple phones to scan an inventory at the same time. For more information, go to www.e21cp.com.