Port Passenger Accelerated Service System

The Port Passenger Accelerated Service System was a suite of programs of the former U.S. Immigration and [Naturalization Service], including:

Immigration and Naturalization Service Passenger Accelerated Service System
Secure Electronic Network for Travelers Rapid Inspection
Videophone [Inspection Program (VIP) and Outlying Area Reporting Station (OARS)]
Remote Video Inspection System

While SENTRI and the Videophone Inspection Program are still in operation, most of these programs have been superseded by the U.S. Department of Homeland Security Western Hemisphere Travel Initiative programs, such as NEXUS (frequent traveller program) and Global Entry programs.