rolling code and garage door openers

As always, xkcd anticipated this by several years: xkcd: Security

Hail Ants & beowulff have it right. This exploit is cute, might well be implementable as **Habeed **explains, but is not really a reason for the whole car remote keyfob and garage door opener industry to go to red alert and replace the entire installed base.

Um, see step 3 on my list. People who figure out this stuff are, you know, kind of smart.