The kind of readers that are attached to gas pumps seem more expensive and do a lot more.<p>EDIT: They look like this: <a href="http:&#x2F;&#x2F;kytx.images.worldnow.com&#x2F;images&#x2F;24359909_BG1.jpg" rel="nofollow">http:&#x2F;&#x2F;kytx.images.worldnow.com&#x2F;images&#x2F;24359909_BG1.jpg</a> if you aren&#x27;t familiar with what US gas pumps look like.