Watching Us Through the Sorting Door -- July 12, 2005
Sorting Door will be a test-bed for studying the massive databases that will be created by RFID tags and readers, once they become ubiquitous. The project will help legislators, regulators and businesses make policies that balance the interests of industry, national security and civil liberties, said Stapleton-Gray.
Sorting Door participants will then investigate how the RFID tag's unique serial numbers, called EPCs, can be merged with other data to identify dangerous people and gather intelligence in a particular location
Government investigators could also build profiles about individuals through the EPCs, such as their tastes in clothing, or their reading preferences

RFID/EPC tags on consumer goods "may give clues to their owners' interests, habits, and activities," according to the Sorting Door proposal. This data could be acted upon by security sentinels, or devices that greet recognized customers
http://www.theregister.co.uk/2005/07/12/sorting_door_project/print.html
http://www.theregister.co.uk/2005/07/12/sorting_door_project/

The Sorting Door Project
http://www.sortingdoor.com/