On 19 Nov 2005 10:28:48 -0800, wrote:

"Hi,
Don't need to worry. Things like that is designed to include your
worries. If you keep pushing remote button more than once, door will
stop/reverse/stop/reverse..... Right?
Tony "

Not if you're pushing it when out of range, which is the interesting
question he was asking.about rotating codes. From the link, it looks
like the door will accept any one of the next 256 codes. If you push
it more than that, it will be out of synch with the opener and will
require re-initializing it.


Then if someone like a parking lot attendent had access to a
sophisticated storage ocilliscope/spectrum analyzer/function
generator, couldn't they just press the button once and have their
device learn a valid code?

As long as they used it before the owner went back home (say by
telephoning the code to an accomplice), then they would have access to
the garage, right?

Not that your average Joe thief would have access to this kind of
equipment, but the rotating code scheme doesn't seem to provide the
degree of security that it promises....

Beachcomber