1. A method for verifying that a document is included in a document management system, the method comprising: producing, in accordance with a customer requirement, material containing a plurality of randomly distributed passive resonators positioned within each of a plurality of scan tracks, the scan tracks positioned to ensure at least a portion of at least one track will be included with each of a plurality of document blanks formed using the material; printing a non-variable visual element and a variable visible serial number on ones of the plurality of the document blanks; directing an interrogation signal to individual ones of the document blanks, operative to cause resonators disposed within the scan track portions included therein to collectively emit a response signal specific to the individual document blank; deriving a random serial number from the response signal, and storing the random serial number in a database in association with the visible serial number printed on the document blank; providing one of the printed document blanks with stored random and visible serial numbers as a document to a document holder in a transaction, and storing transaction data in the database in association with the random and visible serial numbers of the document; presenting the document to a document interrogation device; directing, by the interrogation device, a confirmation interrogation signal similar to the previously directed interrogation signal to cause the resonators in the document to emit a confirmation signal; deriving a confirmation serial number from the confirmation signal; obtaining from the document the visual serial number; comparing the confirmation serial number and the visual serial number to the stored document random serial number and the stored visual serial number; and outputting an indication of the document being included in the document management system as determined by said comparing.