![]() On the surface, tracking devices via Wi-Fi is very straightforward. from being used to launch scripts at boot. Also, Raspbian uses systemd, so systemd is used in this tutorial but there is nothing preventing runit, sysv, upstart, etc. In fact, the lack of a Real Time Clock ( RTC) on the Raspberry Pi made the task a little more challenging. I picked a Pi because I had one on hand and I didn't particularly care if it was lost/stolen/broken at the conference. ![]() ARM development boards, laptops, some Android phones, desktops, etc. In a nutshell, a Raspberry Pi with a wireless dongle operating in promiscuous mode tracked particular 802.11 packets via tcpdump and unique MAC addresses were logged and used as a proxy for visitors.īefore I get into the details of this project, I have to say that it is possible to use nearly anything running Linux with a promiscuous-capable Wi-Fi chipset. Luckily, it was safe to assume most of our visitors were carrying a smartphone so it was feasible to track Wi-Fi beacons. ![]() ![]() Rather than use a tedious mechanical clicker to count guests, I set out to create an automated method. I was recently a vendor at a large conference and was tasked with keeping track of how many interactions we had at the booth. ![]()
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