Notice of Privacy Act of 1974: System of Records, Automated Identification Management System (AIDMS) [open pdf - 104KB]
"The Department of Homeland Security is creating a new system of records for the United States Visitor and Immigrant Status Indicator Technology Program. This new system of records is the Automated Identification Management System. It will be used to facilitate and further automate processes for entry into and exit from the United States through the issuance, to covered individuals, of a radio frequency identification tag with a unique identifier. These tags and their associated reading, processing, and storage components are intended to improve the recording of entry and exit data at U.S. land border Ports of Entry beginning July 31, 2005."
Department of Homeland Security: http://www.dhs.gov/