Men In Black is the only ride I rode yesterday that has ride lockers, anyway one bank of lockers is set up to work with a wrist band that (I assume has a bar code on it), so it looks like you scan the band for your ride locker as opposed to the finger scan method.
I did not see where you get a wrist band, but I think a system like this would work better and I hope this is a test that goes well and brings a change to the current system.