My daughter is 18 now, (thank god) she has aspbergers, never did I have a problem with her running off. Most kids with aspbergers don't like being around other ppl. My problem with her was getting her to go places, just to go never the way she behaved, she was always very polite and well mannered even if she didn't want to be where she was at the time. I always watched her very close tho and not because I knew she had autism but because she was little , hell I still watch her lol. I guess I'm one of the one of those that is over-protective but I never even considered a leash for her. Maybe a leash for some of the adults around her, they acted more immature than she did.