Hi there, Searched the rulebook as well as this forum but nothing came up. Getting ready for my first time out in a VERY long time and we didn't have transponders back then... Don't want anything stopping me from racing... I purchased a used transponder and I'm wondering if you have to get a subscription as well? Is registering the transponder with mylaps.com enough? I've added my transponder number to my bike in my garage on the registration page but have not bought a mylaps subscription yet. Also a tip - if you are buying a used transponder I would suggest having the person you are buying it from remove the number from their account and add it to your own before you give them money. I didn't have an issue and the person I bought it from was awesome but someone else might not be as nice.