For travelers who fit the criteria, Air Canada offers TSA PreCheck, a service that speeds up and simplifies the security check procedure at American airports. Air Canada TSA PreCheck by using TSA PreCheck, travelers can bypass the regular security queues and keep their shoes, belts, and lightweight jackets on. You may also bring computers and liquids in your carry-on luggage. In order to use TSA PreCheck, clients flying Air Canada are required to enter their Known Traveler Number (KTN) during the reservation process or while logging into their frequent flyer profile. This service is available to airports in the United States; airports in Canada are not covered. TSA PreCheck is excellent for frequent travelers who wish to breeze through security inspections and experience less anxiety.