Non working odometer

#1
I am hosting an SS1000 memorial ride on June 26. I have a possible participant that does want to attend, complete the ride and get it certified, but does not have a working odometer. I do not want to tell him he can attend and get certified and then be rejected. My question is how would he complete the ride, document it and get it certified without a working odometer? He is not an IBA member at this time.