Washington ? Despite stiff resistance from airlines and privacy advocates, the U.S. government plans to push ahead this year with a vast computerized system to probe the backgrounds of all passengers boarding flights in the United States.

The government will compel airlines and airline reservations companies to hand over all passenger records for scrutiny by U.S. officials, after failing to win cooperation in the program’s testing phase. The order could be issued as soon as next month. Under the system, all travelers passing through a U.S. airport will be scored with a number and a color that ranks their perceived threat to the aircraft.

Another program will be introduced this year that seeks to speed frequent fliers through security lines in exchange for volunteering personal information to the government.

The two new initiatives will augment a system introduced last week to fingerprint and photograph millions of foreign visitors on arrival in the United States.

Privacy and consumer advocates worry that both programs could be discriminatory because they subject airline passengers to different levels of scrutiny. Certain travelers, such as non-U.S. citizens, could face additional questioning under the program known as CAPPS 2, or the second version of the Computer Assisted Passenger PreScreening program, some organizations say. Business travelers who typically pay high prices for their seats will likely get an easier pass through security in the “registered traveler” program.

Privacy advocates say they are most concerned about CAPPS 2, which would replace the airlines’ existing computer screening system.

TSA said the new computerized system will provide a more thorough approach to screening passengers. It will collect travelers’ full name, home address and telephone number, date of birth and travel itinerary.