did you read the story about burglars using stolen garage door remotes to break into people's garages:
http://www.nzherald.co.nz/crime/news/article.cfm?c_id=30&objectid=10557249
i have a garage door remote but there are no buttons to set any security code on it. once when i got a replacement remote the guy said he would put a chip inside it so it's the same as my current remotes.
so anyone know what sort of protection my garage door has from someone randomly using their garage door remote on my garage door?