Showing privacy issues a big middle finger U.S has started issuing passports that contain biometric info stored on remote readable microchips. Keeping in mind the repercussions of September 11 attack and to streamline the incoming as well as outgoing human traffic U.S. has been trying to use this technology for last three and half years. In 2002 it has passed legislation requiring the introduction of electronic passports.
Broadly it has these main benefits,
It enhances border security
It reduces the possibility of identity fraud
Will impose minimal burdens on travelers
More individual privacy