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Ok, which of you trolls started this?
(lemmy.dbzer0.com)
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this post was submitted on 19 Mar 2026
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Isn't there a thing where car thiefs use an RF booster to make newer cars think the keyfob is right next to the receiver?
Personally, I'd want an antenna on/off switch that gets activated by shoving it in the keyfob hole. Seems reasonably secure.
If we do something like that, we can also reduce the size and change the material. Just for ease of use, maybe something thin and metal, like this?
Heh, it's on the right track. But as an IT guy and tech nerd, I'd want to go for something like this. I've even set mine up for computer logins back when I had an Active Directory test environment for learning.
Nono, you see that would actually be user serviceable and convenient for the consumer!! You're fired Smith. Johnson, tell me again about your llm powered brain mounted key fob with ad injection and $20 a month subscription? I love it! You're promoted!!
That would never work, where's the battery even supposed to go? ;)
Maybe just use an rfid coil in the ignition and turn a key to start like immobilizers have done for like 20-30 years at this point.
Better yet use physical contacts in the key and use an on key cryptographic controller to do public key authentication.
That way key material never leaves the key itself after being manufactured making it basically impossible to steal the car without the key.
That also solves the problem of the dealership needing to continue charging hundreds of dollars to replace a lost key.
This is why they did it ya know.
Squeeze every drop out if the consumer you possibly can
New cars fucking suck.
The solution to that is open source tooling to download backup and re-upload your private key material to a set of keys.
Doesn't solve the issue of the key cut though.
Oh god I always hated those cars that start by pressing a button. Fuck off let me turn my key. I like the thing where the car unlocks automatically if you are next to it and all that but for the love of god the press button to start car thing needs to die.
Yes, but you can usually just disable the proximity unlock feature on the car itself if you are worried about it
You think someone wrapping their keys in aluminum foil are going to know how to disable proximity unlock?
They pretty much already do this. Most modern fobs turn themselves off if they've not moved recently, which protects against relay style attacks.
they don't need the key fob any more.