ObesityHelp

 Do you find it accurate on the counts? Tonight I went out for a quick walk, I know from Map My Run (and doing a drive though with my car) that the outside circle of my neighborhood is 2 miles almost exactly, went around twice tonight wearing the FitBit and it said I did 3 miles, and that I was walking much faster then I think I was. 

Any input? Does it have to be adjusted for stride length? Is there a way to do that?