| ▲ | joelthelion 6 days ago |
| Why don't cars use public key crypto? Is it too expensive to run on a key? |
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| ▲ | Hamuko 6 days ago | parent [-] |
| Probably power-wise, yeah. Most keys only have little coin batteries and people want those to last for years. I have a "smart" BMW car key and it inhales the battery. I don't think it can go more than a couple of weeks without having to be charged. |
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| ▲ | anticrymactic 5 days ago | parent [-] | | Could charging in the ignition be good enough to keep it full? Or a secondary dock at home? I don't really like the idea of short term key batteries, but it sounds like bmw can improve the current system a lot. | | |
| ▲ | Hamuko 5 days ago | parent [-] | | There's no ignition in BMWs anymore. Even if you don't go for the full keyless package, the start is still keyless. You just pay extra to have the doors be keyless too. |
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