this post was submitted on 06 Aug 2025
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Tracking MAC addresses at scale is very hard. It is easier to do faces.
Especially since cell phones randomize macs for privacy. Been doing that for years.
I don't think watches, earbuds and other Bluetooth devices do. Also typically the MAC is per SSID/device
The reason they are hard to track is that you would need to track thousands of devices and then somehow correlate all of it. They are really only useful if you are trying to target someone but even at that there are easier ways.
Hey, you may have not heard of it, but there’s this thing called computers that do this job without breaking a sweat, this engineering problem has already solved, holy cow you underestimate people‘s desire to do horrible stuff.