Patent 7129840 was granted and assigned to RICOH COMPANY,LTD. on October, 2006 by the United States Patent and Trademark Office.
Document monitoring provides a measure of document security. Documents incorporating radio frequency identification (RFID) tags can be monitored by appropriate interrogation components for movement activity. A surface suitable for placement of documents is configured for monitoring RFID tagged documents. Such documents can be monitored in a document processing device to control access to the document processing functions.