3 ms·

I completely agree in terms of people saying FB 'listens' as in records audio. But one thing people often overlook with hyper-local geo ads are bluetooth beaco

I completely agree in terms of people saying FB 'listens' as in records audio. But one thing people often overlook with hyper-local geo ads are bluetooth beacons which are tracked at most major retailers these days. Doesn't help that Apple trying to help people use wireless headphones now likes to turn bluetooth on every day (the lock screen bluetooth button defaults to 'off until tomorrow')

eli 9y ago
That's possible and maybe even is deployed somewhere, but I think it is still very unlikely to encounter it. We're overwhelmingly looking at ads that are targeted based on something obvious like zipcode and age.
FridgeSeal 9y ago
Combined with the fact that, as of the most recent version of iOS, "turning off" wifi or bluetooth in the quick menu just disconnects you from whatever network or device you're connected to, it doesn't actually disable either despite the visual indicators (and past behaviour) suggesting that they are disabled. unpaired bluetooth and unconnected wifi are gold for anyone wanting to track you around a space.
- supbitcoin 9y ago
  I don't get it, how would you identifity someone with their wifi turned on ?
  - dillondoyle 9y ago
    And bluetooth beacons (which you can get geo position without having to pair) are uniquely identifiable and used by almost all big box stores..
  - John_KZ 9y ago
    If the WiFi is on, you broadcast your MAC, which is uniquely identifiable unless you root your phone and install software to change this fact.
    - zaarn 9y ago
      IIRC current android and iOS devices will probe Wifi using a randomized MAC and only use the real mac once connecting for realsies.
      - michaelt 9y ago
        researchers found that "the overwhelming majority of Android devices are not implementing the available randomization capabilities built into the Android OS," which makes such Android devices trivial to track. [...] Apple, meanwhile, introduced MAC address randomization in iOS 8, only to break it in iOS 10. [...] its network probe broadcasts to include a distinct Information Element (IE), data added to Wi-Fi management frames to extend the Wi-Fi protocol. https://www.theregister.co.uk/2017/03/10/mac_address_randomization/ https://www.theregister.co.uk/2017/03/10/mac_address_randomi... four scholars from the US Naval Academy say they've managed to track 100% of all test smartphones, despite the devices using randomized MAC addresses. [...] The novelty in our method is that we are sending RTS frames to IEEE 802.11 client devices, not APs, to extract a CTS response message which we derive the true global MAC address of that device. https://www.bleepingcomputer.com/news/security/researchers-break-mac-address-randomization-and-track-100-percent-of-test-devices/ https://www.bleepingcomputer.com/news/security/researchers-b...
- John_KZ 9y ago
  Don't forget the ultrasound-based tracking.

eli 9y ago

That's possible and maybe even is deployed somewhere, but I think it is still very unlikely to encounter it. We're overwhelmingly looking at ads that are targeted based on something obvious like zipcode and age.

FridgeSeal 9y ago

Combined with the fact that, as of the most recent version of iOS, "turning off" wifi or bluetooth in the quick menu just disconnects you from whatever network or device you're connected to, it doesn't actually disable either despite the visual indicators (and past behaviour) suggesting that they are disabled. unpaired bluetooth and unconnected wifi are gold for anyone wanting to track you around a space.

supbitcoin 9y ago
I don't get it, how would you identifity someone with their wifi turned on ?
- dillondoyle 9y ago
  And bluetooth beacons (which you can get geo position without having to pair) are uniquely identifiable and used by almost all big box stores..
- John_KZ 9y ago
  If the WiFi is on, you broadcast your MAC, which is uniquely identifiable unless you root your phone and install software to change this fact.
  - zaarn 9y ago
    IIRC current android and iOS devices will probe Wifi using a randomized MAC and only use the real mac once connecting for realsies.
    - michaelt 9y ago
      researchers found that "the overwhelming majority of Android devices are not implementing the available randomization capabilities built into the Android OS," which makes such Android devices trivial to track. [...] Apple, meanwhile, introduced MAC address randomization in iOS 8, only to break it in iOS 10. [...] its network probe broadcasts to include a distinct Information Element (IE), data added to Wi-Fi management frames to extend the Wi-Fi protocol. https://www.theregister.co.uk/2017/03/10/mac_address_randomization/ https://www.theregister.co.uk/2017/03/10/mac_address_randomi... four scholars from the US Naval Academy say they've managed to track 100% of all test smartphones, despite the devices using randomized MAC addresses. [...] The novelty in our method is that we are sending RTS frames to IEEE 802.11 client devices, not APs, to extract a CTS response message which we derive the true global MAC address of that device. https://www.bleepingcomputer.com/news/security/researchers-break-mac-address-randomization-and-track-100-percent-of-test-devices/ https://www.bleepingcomputer.com/news/security/researchers-b...
John_KZ 9y ago
Don't forget the ultrasound-based tracking.