61–70 of 204 posts
Has anyone ever studied what happens with Bluetooth contention where thousands of people are gathered in a small space? Like a marathon mass-start with 10,000 sometimes 20,000 or more people How does bluetooth handle that? Or it doesn't?
> 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…
You could also read the numberplate directly with OpenALPR. It can be finicky to set up a camera to do this reliably in all conditions (particularly at night and high speed) but once done you could detect any car passing, not just ones with wifi access points.
When the law requires us to have numberplates, I think this just has to be considered public information for anyone who is nearby or can leave a camera nearby. It's not ideal to leak it in additional forms that might be easier for people to grab (say, with an ESP32), but it's a matter of degree rather than of kind.
But yeah, I'm with you on some of these others, particularly the medical devices. That's not great.
> 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…
There is also a Bluetooth shutoff app on F-Droid.
https://f-droid.org/en/packages/com.mystro256.autooffbluetoo...
I have also put an Airtag clone in my car (Loshall in iOS mode). That is probably leaking my arrival times. My water meter is also now bluetooth.
> 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…
There's an Android app that can find devices, make profiles, and you can track location for as long as they're connected. So you can profile passerbys and even get notified when the profile passes through again. I forgot what is was called
Wonder what the difference is between this and: https://github.com/ArgeliusLabs/Chasing-Your-Tail-NG
Earlier quoted context omitted.
I disable bluetooth on my phone, though periodically I find that it's back on. Edit: iOS
I have the opposite experience: GrapheneOS has an option to automatically turn your bluetooth off after a configurable period of not being used. So when I need to use bluetooth, I turn it on like normal. Then, without thinking about it, it automatically turns off. The end result is my bluetooth is only ever on for a couple hours each month when I'm making phone calls.
> 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…
> 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. Yes, I remember Cisco had a product like this all the way back in 2011. They could pinpoint a customer to an exact position inside a store using triangulation, they would know which shelf you spe…
Ever been in an Apple store? Look up. In the dark voids between the edge-to-edge backlit ceiling. There are secrets there. Watching you.
> Bluetooth mesh networks—no internet required, no servers, no phone numbers
LLM slop. Both the article and the Python script
Has anyone ever studied what happens with Bluetooth contention where thousands of people are gathered in a small space? Like a marathon mass-start with 10,000 sometimes 20,000 or more people How does bluetooth handle that? Or it doesn't?