this post was submitted on 04 Jan 2024
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The "mimic" you're talking about is called a replay attack, and those have been prevented for a long time with rolling codes.
It's not, it's a relay attack. Someone stands near your keys with a receiver, and they relay the signal to a transmitter near the car. It works because it's the actual signal from your keys.
Never keep your keys near your door, unless they're in an RF shielded holder.