I’d totally agree that the people going into the library should be informed that they’re being tracked, and because it’s a public building, perhaps the tracking shouldn’t be done at all - preventing those who value their privacy from accessing public infrastructure is unfair. If you don’t want to allow them, you will need to get involved in changing your local laws. Retailers only ‘do it all the time’ where they are allowed to.
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Some nations have decided that individual privacy is a fundamental human right, and that violating someone else’s right to privacy by collecting their MAC beacons is illegal. Nothing about the traffic light prevents you in any way from driving. Except that in some countries, there are privacy laws that make it illegal to do this information collection.īy analogy, there’s ‘nothing’ preventing you from driving through a red light. There’s “nothing” preventing you from recording this information in bulk. Posted in Microcontrollers, Wireless Hacks Tagged ESP8266, IoT, tracking, wifi, wireless Post navigation While this is similar to another project that listens to radio signals to determine the coming and going of ships and planes, tracking people with this sort of granularity is in a different category altogether. While some phones implement MAC randomization, there are still many out in the wild that don’t.
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While an awesome project with open-source code on Github, it is important to stress how important is it to get permission to do this kind of tracking.
A simple web interface was built that allows the library to figure out how many people are in the library and how often they frequent the premises. With permission from his local library, eight repeater boards were scattered throughout the building to forward the probe packets to where the tracker could pick them up. The code can be updated OTA making it easy to service while in the field. By putting the ESP8266 in monitor mode, the probe frames can be logged and uploaded. Using about 12 components, laid out a small board in Eagle. These packets contain the device MAC address as well as the SSIDs you’ve connected to. Most WiFi-enabled devices will send out “probe requests” frames trying to search for the SSIDs they were connected to. built an ESP8266 based tracking device that takes advantage of this.
Smartphones are packed with all sorts of radios and ways to communicate wireless. For most of the population it is never more than an arm’s length away, it’s on your person more than any other device in your life. The smartphone is perhaps the signature device of our modern lives.
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