All current code is now moved to GIT. It's open source now :)  

On the weekend I went out and did some range tests with the YAGI- there were so many people even in my remote area that it just spammed me with MAC addresses.  I good problem to have I suppose :) 

I ran in to some issues with the OLED and found I could NOT make the I2C display work at the same time as writing to the SD card via SPI.  No matter what I tried it seemed to not work. Eventually I guessed that it was a RAM issue and not a strange hardware glitch so I moved over to the lightest display library I could find (instead of the Adafruit one) and it now works!

I also got some neat comments pointing out that this may work quite well on game preserves to catch/track poachers. I see no reason it wouldn't as long as they are carrying a phone without wifi turned off. I suppose most do. 

Neat idea anyhow.