Archived/For Reference I do not actively use or maintain this anymore. It is left here for archiving purposes and hopefully someone will find it useful.
Android Pcap Capture
Android tool for capturing packets with a RTL8187 device nic connected with a USB-OTG cable.
This is a fork of the original project with the added feature of capturing the signal strength. The actual value of the stored signal strenght is wrong, but the relation between values should be somewhat correct so this allows one to differentiate which devices were closer/further away.
Original project is here https://www.kismetwireless.net/android-pcap/, the hard work was done by Jinghao Shi as described here, http://jhshi.me/2014/09/21/get-packet-signal-strength-of-rtl8187-dongle/.
USB Host-mode capture using the RTL8187 USB NIC.
Some icons (USB, Channel hop) from The Noun Project, http://thenounproject.com