I didn't realize that as I have never seen anybody push anything on the ticket machine they just wave you on. The OAP pass probably registers when it is cleared on the pad but doesn't determine whether I am travelling 1 stop or to Brighton from HH.
My brother in law and me use our OAP bus passes to get to and from the ground so if it was scrapped it wouldnt affect us other than getting home for night games. I am surprised that the bus companies do not have a means of checking how many use their BHA travel pass. Mind you the same...