I'm not looking forward to this finger scanning business at WDW. We recently got annual passes at a Paramount park where they also do the finger scans. DS had a difficult time getting his to work (3 tries), and my husband's never would work. It wasn't that he didn't "get it", as the employee stood right there and told him exactly what to do several times. The scanner just did not work for him. The Paramount employee speculated it might be because he has a lot of callouses on his hands. They finally had to just encode his card to where he didn't have to scan. He just puts his card in and goes though. Unfortnately, it sounds like this is not an option at WDW.