An electronic price label (EPL) price verification system which ensures that a price for an item obtained from a price look-up (PLU) file by a bar code scanner is equal to another price displayed by an electronic price label (EPL) for the item. The EPL price verification system includes a computer...http://www.google.de/patents/US5794211?utm_source=gb-gplus-sharePatent US5794211 - EPL price verification system and method
