5 ms·

Yep. My comment was more along the lines of 'connectivity can be fun/useful, but sometimes there's a privacy trade-off'. I'd consider myself 'aware' rather tha

Yep. My comment was more along the lines of 'connectivity can be fun/useful, but sometimes there's a privacy trade-off'. I'd consider myself 'aware' rather than 'paranoid', but if we extrapolate for a minute....Some function or app on the phone (or distant cloud service) can recognise the MAC address of the Fisher price phone's bluetooth PHY and, coupled with GPS info, we have a location where there's possibly a young child (or an older one in their home office!). Maybe, worse case, your targeted ads contain more children's toys.

300bps 5y ago
Some function or app on the phone (or distant cloud service) can recognise the MAC address of the Fisher price phone's bluetooth PHY That’s not how MAC addresses work. Once a packet crosses a router, the packet appears to come from the MAC address of the router. So for example a web site you connect to has no idea what your MAC address is.
- inetknght 5y ago
  > So for example a web site you connect to has no idea what your MAC address is. ...unless you (or the app you're running) tells it.
  - linker3000 5y ago
    Exactly.
- oseityphelysiol 5y ago
  Bluetooth uses MAC addresses too, so this still applies.
  - zymhan 5y ago
    And no one farther than 30 feet from you will see your Bluetooth hardware address.
    - oseityphelysiol 5y ago
      Yeah, but someone in your home might have a rogue phone app installed (or not even that, I bet companies like Xiaomi already so this with their smart home stuff) that scans bluetooth devices and sends the addresses so that they can be data mined.
- linker3000 5y ago
  Well, I'd disagree with the first statement having worked with IPX/SPX ;-) But, yeah, you're not wrong for IP networking - however, an app on the phone could forward the MAC address of the bluetooth connected device.
  - vlovich123 5y ago
    Regular apps can't typically access the MAC address of the connected device. Additionally, with BLE (& Bluetooth 5?) the MAC address is required to rotate regularly as part of the spec (IIRC even while connected but certainly the broadcast address).
    - SwaraLink 5y ago
      BLE has a privacy feature that enables MAC address rotation, but it isn't a requirement. Apple products and Android phones use the privacy feature, but other than that most products don't. The possibility of tracking someone via the MAC address of their Bluetooth devices is very real. But you are correct that regular apps can't address the MAC address of connected Bluetooth devices, so the tracking vulnerability that OP is suggesting isn't really possible.

300bps 5y ago

Some function or app on the phone (or distant cloud service) can recognise the MAC address of the Fisher price phone's bluetooth PHY That’s not how MAC addresses work. Once a packet crosses a router, the packet appears to come from the MAC address of the router. So for example a web site you connect to has no idea what your MAC address is.

inetknght 5y ago
> So for example a web site you connect to has no idea what your MAC address is. ...unless you (or the app you're running) tells it.
- linker3000 5y ago
  Exactly.
oseityphelysiol 5y ago
Bluetooth uses MAC addresses too, so this still applies.
- zymhan 5y ago
  And no one farther than 30 feet from you will see your Bluetooth hardware address.
  - oseityphelysiol 5y ago
    Yeah, but someone in your home might have a rogue phone app installed (or not even that, I bet companies like Xiaomi already so this with their smart home stuff) that scans bluetooth devices and sends the addresses so that they can be data mined.
linker3000 5y ago
Well, I'd disagree with the first statement having worked with IPX/SPX ;-) But, yeah, you're not wrong for IP networking - however, an app on the phone could forward the MAC address of the bluetooth connected device.
- vlovich123 5y ago
  Regular apps can't typically access the MAC address of the connected device. Additionally, with BLE (& Bluetooth 5?) the MAC address is required to rotate regularly as part of the spec (IIRC even while connected but certainly the broadcast address).
  - SwaraLink 5y ago
    BLE has a privacy feature that enables MAC address rotation, but it isn't a requirement. Apple products and Android phones use the privacy feature, but other than that most products don't. The possibility of tracking someone via the MAC address of their Bluetooth devices is very real. But you are correct that regular apps can't address the MAC address of connected Bluetooth devices, so the tracking vulnerability that OP is suggesting isn't really possible.