An inventive check is disclosed including a barcode, which includes at least one of the following pieces of information: the date the check was paid, the amount of the check, the payee, the drawers account number, the banks routing number, and the identifier number of the check. A method for preventing check fraud is also provided, including the steps of attaching a machine readable code on a negotiable instrument, creating a negotiable instrument, the drawee receiving the negotiable instrument, and the drawee scanning the machine readable code. A method is also included for integrating the entire checking process.