Transponder Verification Made Easy Don’t forget that you can verify your transponder’s subscription, confirm which rider a transponder is assigned to, and link it to a member if it’s not already connected before you arrive at a national event. Our team will be at the check in station on the arena floor all weekend to help activate transponders and answer any questions. usabmxnationals.com/verify 📍 Reminder: New transponder purchase and pick up for transponders bought during pre-sign will still be handled at the registration trailer outside. #usabmx #bmx #timing