BMW (bikes) includes with their fob a really thin key for this event. You place it near the radio transmitter, and you can start bike etc. They call it a wallet key, and tell you to carry it with you. I must have been (accidentally) giving the service advisor an are you fing kidding me look when he was explaining the wallet key, as he stopped short and said, yea I know, why not just use a key to begin with? Lol