A retail terminal includes a scale for weighing items to be purchased. The scale is operative to obtain a settled or stable weight of items placed thereon either after a predetermined time delay from when the items were placed on the scale or the receipt of an actuation signal from a trigger or actuator....http://www.google.ca/patents/US7070097?utm_source=gb-gplus-sharePatent US7070097 - Settled weight scale for a checkout system
