It took longer than we expected, but the second and final part of Humphrey Cheung's BlueSniper Rifle How To is here. Boot up your Linux machine and get ready to make some firmware!
There are those who think Bluetooth is secure due to its intentionally-limited range. But Part 1 of this article by Humphrey Cheung shows you how a little time and not a lot of money can produce a weapon that can blow away any such thoughts.