The pedometer will motivate you to take those extra steps. You will want to take stairs instead of escalators and you will look for the furthest parking spot at the mall rather than the closet.
Pedometers range in style and price. You can purchase one for under $10, or you can find one that is a couple hundred. The more expensive ones are clearly more detailed tracking more than just steps. For example they will also show how many miles you have walked, run, etc...or how many calories you have burned.
Personally, I like it for the simplicity of tracking my steps. I purchased a New Balance pedometer at Target for only $6 and change.
You can click HERE to view or order the one I purchased. I did go into the store to get mine to avoid shipping fees.
Let me know if you get one and how addicted you become to it!!