You need a Mac, git, and XCode

in terminal type: 'git clone https://github.com/petewarden/iPhoneTracker.git

open that new iPhoneTracker folder, and load up the xcodeproj ( iPhoneTracking.xcodeproj )

in there go to iPhoneTrackingAppDelegate.m on the left sidebar

from that look at line 179 for changing the time inbetween registering, and look at line 149 for the locational precision

with those changed, hit the play button in the top left corner and the app should build and run