Event organizers have used QR codes on tickets for years to speed up entry at concerts, sports events, and other large gatherings. The same approach works well for ID badges used at events, companies, and institutions, helping to control staff and visitor access while simplifying check-in and verification. Beyond access control, badges can also serve as a powerful marketing channel. For example, a dynamic URL QR code on an employee badge can direct customers to your online store or a specific product page. A link listing QR code can gather all your social profiles in one place and help increase your social media following. An app QR code can guide attendees to an app download that provides exclusive benefits or features. All of this can be achieved quickly and easily with a single scan, creating seamless interactions that benefit both staff and visitors.