Ha ha, yeah, I'm now having trouble understanding where the "scanner" is for the second bit. You gotta make it crystal clear for players.
My other advice would be, for stuff like keycards etc, most (if not all) games have it as an inventory item. Using the physics component to hold it suspended in mid air in front of you doesn't quite work and looks and acts a bit clumsy. So I dropped it again, it got wedged under the computer unit in the second room (lol!) and even though it was visible, I pointed at it and clicked but couldn't hold it again!