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If it keeps collecting telemetry it could upload it later if it ever gets the chance. Better it isn't collected in the first place.
by fc417fc802 6mo ago
If it keeps collecting telemetry it could upload it later if it ever gets the chance. Better it isn't collected in the first place.
- drnick1 6mo agoGood point, but in practice I think the only way onboard data could be exfiltrated is by a dealer while the car is being serviced. If you DIY or hire an independent mechanic, this seems unlikely.
- throwway120385 6mo agoOr by the FBI, NSA, CIA, DHS, or some other interested entity.
- willis936 6mo agoIf a TLA is interested in you then you don't need to worry about a data log in your car.
- Arch-TK 6mo agoI find comfort in thinking that, if a TLA is interested in me, they have to work a little bit harder.
- willis936 6mo agoThey don't. They have all internet traffic dragnetted and satellite imaging and radar far beyond what is publicly disclosed. They don't need to check in with some low res crap that insurance companies use to nickel and dime you. If you're trying to escape surveillance and control from TLAs then you better start your moon base plans soon.
- mothballed 6mo agoThe kind of organized crime that those people should be focused on are also resistant to this kind of tracking. The cartels and gangs just use burner cars that they dump, possibly with the keys and title still in it. Good luck doing much with the log but you've got the log and even the entire car to try and gather all the evidence you want. This tracking is mainly for hemming up small fry and productive citizens.
- willis936 6mo agoThat also means it isn't passed to your phone via android auto / carplay. Phone GPS is much worse than car GPS for road navigation. It's basically unusable.
- Arch-TK 6mo agoI've successfully used it in my 2006 Ford Fiesta for about 10 years now... The reliability is way better than GitHub's uptime. Better even than my car's uptime. You must work in telco. 99.9999% or it's unusable :P
- willis936 6mo agoMy SO immediately sniffed out when the GPS antenna was unplugged from a car with carplay. Unacceptably low spouse approval factor.
- tmerc 6mo agoStorage space is limited. There's a black box for accidents that keeps a rolling window of data. That's not the dcm. Outside of that, how much telemetry can you store? What's the retention when there's no cellular connection? And importantly, where is it stored? My guess is that the dcm, having a battery back up and a cellular connection, is also the telemetry store. No evidence other than it's the cheapest and most reliable way to do it. At least for Subaru, the dcm also connects to all antenna so removing it disconnects gps antenna. For other cars, I'd still expect removing the dcm to be good enough for 95% of people given the current expectation from car companies that no one would want to remove the dcm.
- fc417fc802 6mo agoThat's an interesting point but consider that bandwidth is also limited when we're talking about an always on system that's in every vehicle sold. And until recently storage was remarkably cheap. If you log 32 bytes once per second that's only 962 MiB per year uncompressed. But 32 bytes is a lot (or depending on what you're logging not very much), once per second is almost certainly more frequent than necessary, and almost all vehicles spend the vast majority of their time turned off. For example logging RPM every 100 ms, 8 bits gets you reasonable but not perfect accuracy and you're looking at 300 MiB per year of continuous operation. It's just not much of a storage requirement for quite detailed telemetry.
- aaronbeekay 6mo agoYah, but automakers are very cost-sensitive, and flash memory/NVM is one of the easiest places to penny-pinch. I get crap about 2kB payloads.