FYI - if your fingers don't scan correctly (and they won't if you give your APs to your friends) then they will ask you for a picture ID. If the name on teh ID doesn't match the name on the passes, your friends won't be allowed in.
Sometimes the passes don't work correctly (or the scanner isn't reading them), and again, they'll ask for a picture ID.
While it would be nice to save the money, I think your friends would be taking a real chance of not getting into the parks. Don't know if Disney would confiscate the passes or not, but personally, I wouldn't try it.
FYI!!