Method and device for ensuring that a sale of packaged products, in particular a sale subject to control by an official body or organization such as a sale of medicinal products or the like, has taken place legally and once only

摘要

The method of the invention ensures that a sale of a packaged product, in particular a sale subject to control by an official body or organization such as a sale of medicinal products or the like, has taken place legally and once only, said products being contained in packages (4) provided with product identification codes (6) such as usual bar codes; according to the invention, after the identifying code (6) on the product package (4) has been read said code (6) is annulled, the data resulting from said reading being fed to a data printing, recording (15) or similar device only after the annulment of said code has been verified, said recording device (15) verifying and recording the fact that the product sale has taken place.;A device for implementing the aforesaid method comprises means (8) for reading the product identification code (6), means (10) for annulling said code (6), and sensing means (12) for verifying that said annulment has taken place, said reading means (8), annulment means (10) and sensor means (12) being connected to a control circuit (13) which receives the reading signals (L) and operates the annulment means (10), after which on the basis both of verification signals (R) from the sensor means (12) and the reading signals (L) recognizes the product and feeds its data, such as the name and cost, to memorizing means (15) and advantageously to printing means (16) which reproduce said data on a support such as a medical prescription (17) or a similar document, and/or on a fiscal receipt.