These gadgets can be rather unreliable. My husband keeps his clipped onto the belt in his trousers. I normally clip mine straight onto the waistband of my trousers or skirt located between hip and belly button, but I sometimes find if the waistband is allowed to flop open with the top fastening undone, this is enough to prevent it from recording any paces. Also the batteries don't always last terribly long, and if you drop the darned thing it can give up working altogether. Think I'm on my fourth pedometer now.