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What your Bluetooth devices reveal

blog.dmcc.io

151–160 of 204 posts

Re: What your Bluetooth devices reveal

#152
post #78

Earlier quoted context omitted.

You can do this for much cheaper - all four of your tires are broadcasting a unique ID to report tire pressure, the radio to pick it up is cheap (because cars), and TPMS has no facility to randomize or otherwise secure this.

It’s actually even easier, your car has a plate on the front with a unique ID that a camera scans, often to automatically track your park time for ticketing. I can’t really care about obscure Bluetooth tracking when every business has CCTV doing facial recognition.

Even easier, electromagnetic radiation can be used to detect the presence and exact location and movements of not just automobiles, but also people! Many people have detectors for these things that can literally see through transparent material that makes up large sections of the walls of many houses and apartments.

Re: What your Bluetooth devices reveal

#153

Earlier quoted context omitted.

I disable bluetooth on my phone, though periodically I find that it's back on. Edit: iOS

I miss wired headphones for this purpose. It's the only reason I even have BT enabled.

Wired headphones do still exist. :-) I often use a pair of cheap USB C Apple earpods with my Google Pixel.

Re: What your Bluetooth devices reveal

#155
post #72

Earlier quoted context omitted.

> I believe shopping malls often use such signals (wifi, bluetooth) to track what your travel pattern through the mall is. They know what section of the store you spend most of your time in and what storefronts you stall at In the EU this is forbidden unless they explicitly ask your permission. They can still gather aggregate stats but they cannot build a profile on you .

I find it curious that the EU, despite it having such a complex parliamentary structure, is able to consistently enact such laws that are good for ordinary people. Are the two connected, I wonder...

That's the outcome of cherry picking the good things and ignoring the bad, not their decision making structure. Try asking critics of the EU what they don't like (a quick search on here will provide plenty of examples) and you'll see laws that are not good for ordinary people. Repeat with any jurisdiction, making sure to choose the opposite of your preconception (e.g. ask proponents of the USA's system what they like about it) and you'll get a better, less biased and more challenging view.

Re: What your Bluetooth devices reveal

#157
Bluetooth, Wi-Fi, even things like tire pressure sensors... they were designed primarily for convenience and interoperability, not adversarial environments. Now we're retrofitting privacy onto systems that were never really built with that as a first principle

Re: What your Bluetooth devices reveal

#158
post #9

> We’ve normalised the idea that Bluetooth is always on. Phones, laptops, smartwatches, headphones, cars, and even medical devices constantly broadcast their presence. The standard response to privacy concerns is usually “nothing to hide, nothing to fear.” I guess anything you send out can be used to profile you. Some of my friends live on a farm near a semi busy road, however far enough from other farms to not be ab…

Even when they claim it's "anonymous," the value is in aggregate behavioral patterns: dwell time, repeat visits, path through the space, etc.

Re: What your Bluetooth devices reveal

#159

Introducing the „are they home“ device to assist burglars. Just slap that miniature device somewhere non-suspicious on the place of your potential marks and let it run for the battery life of 7 days. Afterwards you collect it and know movements patterns. Features automatic notifications if no movement detected for more than two days.

To be fair, that's basically a variation of techniques that have existed long before Bluetooth

Re: What your Bluetooth devices reveal

#160
post #36

Earlier quoted context omitted.

Don't worry about Tesla's being tracked. Via Bluetooth this has existed for at least 7 years [1] (was mentioned on HN as well). Tesla know (also for 7 years), Musk doesn't care 'since license plates can also be tracked'. I used it in train stations, and get hits when passing highways via train or bus. Esp. fun if you stand still due to traffic lights or traffic jam, since you can try to get a visual. The only lesson…

> Not allowed This phrasing needs to die. Not allowed is something your parents imposed on you when you were a child. You’re not allowed to have an ice cream, or you’re not allowed to hang out with that boy. Laws don’t not allow anything, they only sometimes impose penalties if you’re caught breaking them.

> This phrasing needs to die.

If we're being annoying about language for no valid reason, I would say that a "phrasing" cannot "die", because a "phrasing" is not a living creature.

> Laws don’t not allow anything, they only sometimes impose penalties if you’re caught breaking them.

How does it work with your parents? Do they cast a spell that prevents you from hanging out with that boy? Nobody was "allowed" to smoke, and yet...

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