I don't see how. They only give you one lanyard/pass.
The only thing I can think of is whoever doesn't have it, telling the photo person at the end that you forgot the lanyard that day and need the number of the photo to have added when you have it with you again. We had to do this when we left the lanyard in our room one morning and there was a picture we wanted. They wrote it down and we had it added to our account at the photoconnect place later. But, I can't imagine doing that for every ride or character greet, even if that did work.