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by deadbunny
3365 days ago
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There are many many companies that will track MAC addresses, you don't just expose them then connected to a network you expose them constantly (along with a lot of other potentially identifiable data [hotspots previously connected to]). [1] While a mac address isn't personally identifiable it can be used as a tracking mechanism. MAC X was seen at place Y and place Z etc... Combine with some fun data exploration of hotspots you've connected to (and other phones that have also connected to the same hotspots) and you can get some interesting results like MACs 1, 2, 3 have all been at the best western while 1 and 3 have also both been on network Y which is located in the general vicinity of this address. (I can't for the life of me find the Defcon video of this, was maybe Defcon 20 or 21). 1. https://www.youtube.com/watch?v=Mg-9ygi-pMk |
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Sooner or later someone will be selling the police a service of these MAC addrs or BT addresses or tire pressure sensors have been sighted near the XYZ protest and you just pulled one of those listed devices over so someone in that car is a protestor or was sniffed nearby a shooting crime scene or ...
To avoid the law enforcement entanglements, look how expensive underaged alcohol serving tickets are, now here is a low sensitivity device that sniffs very nearby wireless traffic and a subscription list of serial numbers seen entering and leaving the mostly underage college dorms and/or high school, now if the LED over the door of the bar turns red it doesn't prove your ID is fake but maybe it has a nice bright yellow warning LED to indicate the bouncer or guard should triple check your ID because its on a suspicious list.
Legally most anything is fair with house arrest and parole, register your smartphone and expect severe response if your MAC address shows up anywhere near a bar (assuming your parole forbids drinking establishments etc)
Think of the profiling legacy retail stores will start doing. Hmm this MAC address is recorded to be mostly sniffed around jail, the homeless shelter, and the low income walmart, what is it doing in the electronics department ten miles away from home? Better have someone watch them on camera or in person.
Imagine at a personal level subscribing to a service where you upload every tracking serial number you sniff continuously and in response get a threat indicator. Are there any threat smartphones in this dark alley? Is the clientele of this bar generally safe or dangerous? Based on the MAC addresses currently present, is this a safe neighborhood or should I drive on to the next gas station?