Doesn't the ipad nano have an app for this?
My wife, her sister, and my daughter have weekly competitions with FitBit steps. My wife sleeps with hers, so I wonder about the other capabiities.I have a Fitbit One and recommend one. It's more than a pedometer.
If you have a smartphone, there's a bunch of good pedometer apps. I use the Nike+.
I like the Runtastic pedometer app because it doesn't need a GPS signal and works inside buildings.