We use it all the time. One person needs to have it installed.. but you have to have the information configured in it for every member of your traveling party. Very simple to setup. Basically, it allows you to do what you would normally do at the kiosk in customs, but you can do it on the plane as soon as you land. That lets you proceed past the kiosks. It's nothing like Global Entry, but it is a really nice shortcut. It's saved us a ton of time.