We've had several questions about this program that the TSA instituted back in 2011, then at only designated limited locations in the United States. Eight years later, there has been more participants and more designated locations, so folks who have heard about it are inquisitive about how it works and is it effective.
It does work, and it is effective, especially for those folks who travel by air fairly extensively. It saves time by reducing the time one stands in line at the security check stations, plus you don't have to essentially undress to get through the line.
