Abstract: An apparatus, system, and method are disclosed for preventing fraudulent reuse of a voucher. Voucher misredemption is responsible for more than $300 million of retail losses annually. The apparatus provides a reader that reads an electromagnetic (EM) identifier attached to a voucher, an authentication module that validates the voucher, and an invalidation module that invalidates the identifier upon expiration of the voucher. A storage device may also store information about the identifier, and the location of redemption for purposes of marketing and distribution management.