Anyone with a spectrum analyzer can see people using their earbuds, they can’t deduce any useful information from that. Several analyzers? Yea, can triangulate signals, so what. They still can’t know for sure who they belong to, since BT doesn’t transmit identifying info unless you’re pairing (aka discoverable), and even then it can be randomized.
Also I posted in in a different comment but I’ll leave this here too.
I can get a lot further from my phone than I’d be from the drink machine in who knows how many fast food spots before service drops.
A typical fast food restaurant has dozens, if not hundreds of wifi and bt devices. Nothing surprising when your phone has to fight to get loud enough for your buds.
From a quick search, bluetooth classic has 79 channels, and if there’s 2.4Ghz Wifi in use, it has 14 in damn near the same frequency range.
If you’re worried about tracking - there are far easier ways to do that than hope your BT devices are discoverable and then try and match the (possibly randomized) device IDs to you.
Anyone with a spectrum analyzer can see people using their earbuds, they can’t deduce any useful information from that. Several analyzers? Yea, can triangulate signals, so what. They still can’t know for sure who they belong to, since BT doesn’t transmit identifying info unless you’re pairing (aka discoverable), and even then it can be randomized.
Also I posted in in a different comment but I’ll leave this here too.
A typical fast food restaurant has dozens, if not hundreds of wifi and bt devices. Nothing surprising when your phone has to fight to get loud enough for your buds.
From a quick search, bluetooth classic has 79 channels, and if there’s 2.4Ghz Wifi in use, it has 14 in damn near the same frequency range.
If you’re worried about tracking - there are far easier ways to do that than hope your BT devices are discoverable and then try and match the (possibly randomized) device IDs to you.
Good points, thanks