Hey, good question! I don't know why I didn't think of that - d'oh!
I found it on the ground outside of a park in a rush of people desparate to get to the buses, stuck it in my pocket and pretty much forgot about it. We only had 2 pics taken with our photopass and I didn't even log into the account until a couple of weeks after we returned! I went looking for the photopass card we got at test track today and found this one - when I entered the numbers and these pictures came up I remembered I had found it and stuck it in my pocket.
I'm sure Disney PhotoPass was able to help these guys get their pictures - but I wanted to post just in case.