My brother has developed arthritis which now makes it very difficult for him to walk without a cane, etc. He has decided to apply for a handicapped parking permit through the DMV in IL. They have two versions: A windshield placard that is moveable and hangs from the car's rearview mirror, or a permanent license plate that is designated for handicapped usage. He can qualify for either version. I'm helping him with this, and am wondering which type would be better. The portable placard can be moved from vehicle to vehicle easily if he is not in his own car, but I have heard that they are targets for thieves. He doesn't really ride in others' cars very often, but it would be convenient if he did. Any thoughts from those who have been through this process?