In Miami, once you are in the terminal, they form two lines, one with people who have a single piece of luggage, you will use the Escalator, and one for people with more than one piece of luggage, you will use the Elevator. Needless to say, the Escalator is much faster. Backpacks don't count, just suitcases or other items that you cannot carry. Last month at Terminal G, they were using Facial Recogntion, you look at the device, if it turns Green, off you Go. Not sure what happens if it turns Red.+