The badge attaches to the clip, and the reel (which also has a clip on the back for easy attachment) sits in a pants pocket. The card or badge can be pulled out to be scanned or inspected, and upon letting go, the length of string retreats back into the reel. Badge reels simplify the process of pulling a card out of a pocket or wallet, and act as a leash to keep the card from disappearing. Badge reels are handy for employee ID cards and access control, as they keep the badge within reach at all times. Alpha Card offers a variety of badge reels in different colors and sizes.