yes they need code and they get tricky. in the Bio NWN they couldn't force players to never let go of cursed items (traditionally they grafted themselves to your body which i think would make getting ready for bed a bit difficult not to forget using the facilities).

this little thread came up coincidentally on the NWN2 forums

http://nwn2forums.bioware.com/forums…0445&forum=128

it was a small spoiler for me so just be warned.