Wrong in this case. The algorithm requires re-authentication.
You'd have known this if you knew the algorithm.

 

Yeah a device that strictly records and copies the signal should not work on any modern security system. Most use "code rolling" or some other type of one-time code system, so the password that unlocks the car this time is not the same one that unlocks the car the next time. But obviously there has to be some way for the transmitter and the receiver to both know what the next code is, and that's the algorithm that someone needs to crack in order to steal the code.

Another possibility is what seems to be used in this case, which is a two-key system (public and private). This works differently, but has the same effect -- you can't just repeat the signal that was sent last time.

Of course, if someone cheaps out and uses a fixed code, then the record-and-play-back system would work.

But really, for an S2000 the "slash-the-top" system is even easier than any of this electronic fun and games.

 

Sorry, going back and reading my previous post, I realized that there is some error in the communication of it it, I'll correct it... this is what I meant:

Algorithms are not required on the vast majority of garage doors in the country... (this is what I was mostly aiming towards with my point) ...of course newer cars and security systems use algorithms, but I'm referring to homes. They are a lot more lucritive to break into than going through all of this hastle to break into a car and steal cds or iPods.

The same goes for door locks on homes. Over 90% of all homes and small businesses can be broken into using lock bumping methods. Yes there are locks that are key-bump resistant, but the vast majority are not, simply because there is not a demand for the more expensive locks because the general public have no knowledge of this.

My point was that defeating radio-transponded security codes is no new thing, and almost as soon as people come up with new security meaures, ways around them are found. Therefore, there isn't all of a sudden going to be a HUGE increase of these type of break-ins. Sorry for the miscommunication.