Adhesive badge back (thermal printable) with token expiration area. This badge back features a token expiration area. It must be combined with a token front to activate the expiration. The badge back has an adhesive back, making it easy to attach to your guests: just peel and issue! The badge back can be personalized using a direct thermal printer — add a visitor's name or even your organization's logo! Badge measures 2-1/8" x 3-3/16".