Abstract: A check-out system (1) with an improved security against unauthorized taking away of articles is described. A customer inputs an identification code of an article, for instance by a scanner. The identification is checked by a weight measurement, and possibly with further measuring methods. The articles are conveyed to a shielded collecting space (20). When the customer is ready, an access barrier (21) of the collecting space (20) is closed. The customer can now pay, for instance with his PIN card. He receives a release-code (62) on the cash slip (61). This code is inputted on an input apparatus (23) which is arranged close to the collecting space (20), after which a security (22) of collecting space (20) is lifted and the customer can take his articles away from the collecting space.