This is probably the coolest cardholder we've seen and we've been in the business for a long time. This combo is a perfect and well thought out design for Airports, Inspectors, Law Enforcement, including DHS, Police, Sheriff, Government Employees, Private Company Loss Prevention, and more. Simply load up to three badges from the top and they stay secure but easily removable and at the ready at all times. When you need to remove to swipe, scan, or tap your proximity or access pass proxcard at a scanner or checkpoint, just push up on the discreet thumb notch on the back and your photo identification card pops right up. Independent controls for front (visible) and back (hidden) cards. Note: 2-card multi space slot in the back will eject back sided cards together. Universal break-away lanyard with ring swivel hook attachment and id holder with work together as a bundle but can also be used with the retractable badge reel, lanyard or card holder you already have if you want to change something around.