Nolan has taken his diaper off two times now. I mentioned it to some of my friends with older children and a few suggested using duct tape. One said she brings her daughter to Target to pick out what color duct tape she gets for her diaper. Another said it was recommended by their doctor! So after carefully considering how to use the duct tape (tape the diaper to his skin? Wrap the tape all the way around the diaper? Around the diaper and up over his shoulders?) we figured we'd try this approach.
This immobilizes the tabs so he can't remove the diaper. That's not to say he doesn't try to take it off like shorts but it does prevent an easy removal. Now he has to work harder.