The price verification device typically includes a barcode scanner, an Optical Character Recognition (OCR) reader and an optional key pad. To verify a price for an item, a user such as a consumer will scan a barcode printed on a label associated with the item using the barcode scanner, and read the price...http://www.google.com/patents/US7014116?utm_source=gb-gplus-sharePatent US7014116 - Price verification method, device and program product
