Back in the day, when wardriving was still useful (read: before WPA2 was widespread), we used to wander around with a Zaurus in our pocket running Kismet. Today, every cellphone has WiFi and a significantly more powerful processor inside. But alas, the firmware is locked down. Enter the NexMon project.…
Source: Nexmon Turns Nexus 5 (and RPi3!) Into WiFi Toolkit