A hand-held barcode scanner includes a fingerprint reader for reading fingerprint data from a digit of an operator of the barcode scanner. Preferably, an operator's digit can be comfortably placed on the fingerprint reader while the operator is scanning barcodes. This type of barcode scanner may be used with a system or method for verifying identity during data entry. A system includes the barcode scanner with fingerprint reader; a database storing identification data and fingerprint data for users; and a controller, which is in communication with the scanning element, the fingerprint reader and the database, that compares fingerprint data from a digit placed on the fingerprint reader with the database to obtain an identity of a user and then associates the identity of the user with barcodes scanned by the barcode scanner. The system may activate an alarm if the identity of the operator is not an authorized user.