Hacker News new | ask | show | jobs
by OnlineGladiator 1688 days ago
GPS is a one-way communication. It's really no different from radio in that regard (a signal sent from far away and you have an antenna to read the signal). Unless there's also a cellular modem in your car (which pretty much every modern car has today so I'm not pretending this is unusual) it's impossible for others to monitor your location. You can simply disable the cellular modem and enjoy using GPS without anyone else knowing where you are.

Also, those cellular modems in cars tend to use older technology (this is fairly standard for the auto industry in general since there is such a long regulatory approval process for anything). My 2018 model year car will no longer be able to communicate remotely in January 2022 because the cellular network is being deprecated.

2 comments

I understand this. To be clear, I'm willing to use GPS. I'm willing to carry a cellphone. I'm even willing to use those things in conjunction when I choose to put a battery in and turn mobile data on and location on. If there were a car with a built-in GPS that didn't have cellular reception, I would get it. (I used to use a TomTom).

But I won't buy a car where those things are integrated and can't be turned off. Several people here seem to assume that I don't understand that almost all cars from the past decade have this capability.

It's one reason I drive a car from 1980, with basically no electronics whatsoever. (Other reasons being: it's more fun, it's simple to repair, and it will still run after an EMP).

I'm saying it's really easy to just kill the cellular modem in pretty much any car. Just short it with solder if you want to. Now you can enjoy almost any car with none of the privacy concerns.

If you prefer older cars that's fine, but there's an easy workaround if the issue really is whether or not there's a cellular modem. I've done this before on multiple vehicles and it won't void the warranty for anything other than parts you want to disable already.

Hm. Interesting. The newer navigation systems are based on Android I think - right?

My GF has a 2008 Lexus with a GPS/nav that is definitely not Android. All the maps are onboard on a drive. She actually can't update her maps anymore because the physical ROMs or whatever stopped being produced a few years ago. I'm assuming that newer cars just download their maps from (somewhere? Is this connectivity part of what's sold as a "navigation package"?)

There are other reasons I'm not a fan of newer cars (auto-braking, too much fly-by-wire stability/antilock/nonsense pushing your pedals when you don't want them pushed, and "hill hold"). But disabling the tracking stuff would make it more palatable.

Ironically, my radar detector knows exactly where I am and communicates with a network all the time when it's plugged in. But that's for my own joy =D

Right, but they can access your car later and see all the places you've been.
Seems like a futile effort to avoid cars with GPS if you carry a device around that is connected to a mobile network. Is there anyone that does not carry around a dumb phone, if not a smartphone?
Yes. I know people who have dumb phones but they only put the batteries in when they need to make a call.
I'm not sure whether the inability to be called is a bug or a feature.
mos def a feature
Presumably you are the only person with the password to your phone unless you use biometrics, with which you can be forced to unlock it. The car's black box, on the other hand, can be dumped by warrant (at the most).
I am referring to the mobile network operators in the country having knowledge of your location at all times if you have a connected and powered on mobile device, which is then available to the government.
Tower logs, sure. I'm definitely drifting toward no-GPS dumbphone territory, but there may also be reasons to give up.
You could unplug the antenna or replace the head unit.