TSA PreCheck Touchless ID can save travelers time at dozens of participating airports. Here's how to sign up and which airports are included. (AP Photo)

As TSA workers face empty paychecks and lines stretch past 2.5 hours, travelers are turning to TSA PreCheck Touchless ID for faster security screening.

Travelers hoping to bypass some of the increasingly long wait times at U.S. airports can enroll in the TSA PreCheck Touchless ID program, which is now operating at 65 locations.

When I had to catch a flight at Hartsfield-Jackson Atlanta International Airport on Tuesday morning, the airport’s official website said getting through the main security line would take nearly two hours.

Here's a video and diagram I made that explains the difference between all three program in the most simple way possible; while using cats, so anyone can understand the difference. Also I will explain using a walk through each procedure at the airport with each security service program and explaining why you would want to sign up for that program.

Sick of standing in those long lines before your flight? Check here to see how to apply for TSA PreCheck.

There are currently five services that grant quicker passage through U.S. airport security. Here are the pros and cons of each.