Abstract: Provided herein are aspects of a shopping device and system. In one embodiment, a shopping device includes a weight measurement device configured to weigh products placed thereon; a product interface configured to receive product identifiers; and a controller configured to communicate with a remote database and determine that a product identifier received by the product interface corresponds to a first product placed on the weight measurement device, determine a cost of the first product placed on the weight measurement device, and calculate a cumulative weight and cumulative cost of the first product with one or more products placed on the weight measurement device. Embodiments of a shopping system may also include a product carrying device and a user interface, wherein the user interface may include a visual display, an input interface, and a payment interface.