Originally Posted by SCChris

] At security, you go through a separate lane where the experience is roughly the same as using the new Global Entry kiosks. You get a quick picture which links your biometrics that they already had via your passport/TT account to the airline FF account to your boarding pass and are sent on your way without having to show your ID or your boarding pass (except perhaps at the entry to the line to verify eligibility). I've used it many times with DL and UA and it's very easy and quick.