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)

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

And a lack of funding has prompted staffing shortages and long lines at airports, as TSA agents struggle to keep up. This has lead to frustrating experiences for travelers, who say that they've been forced to spend hours in line during this partial shutdown,