In addition to the other excellent comments, my son told me that kids with
garage door openers will drive through developments pushing the buttons to
see if any doors open. I have an older Genie, and tried it at someone's
house and it worked. I don't know how often this works, but it is possible.

"Don Jenkins" wrote in message
...
My garage door opens by itself from time to time. The make is called
"Challenger", and it is distributed by Swift Garage Door Systems.

Can anyone suggest a cure?

Thanks a lot to anyone who replies.

Don (For email replace first l with on)