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[Discuss-gnuradio] Car alarms and garage door openers

From: Matt Ettus
Subject: [Discuss-gnuradio] Car alarms and garage door openers
Date: Mon, 05 Jun 2006 13:29:59 -0700
User-agent: Mozilla Thunderbird 1.0.8-1.1.fc4 (X11/20060501)

After the Wired article today, I've received a couple of email from people who are concerned that the USRP could be used to clone their keyfob transmitters for car alarms and garage doors. I'm not concerned, since there are already many ways to do this (just check the back of pupular science magazine). However, I am curious about it. I know that we can capture and play back any rf signal. The question is whether that replayed signal would result in the door being unlocked. I was under the impression that most of those systems allow an unlock code to only be used once, but does anyone out there know for sure?


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