Some blind people who work with dog guides will also use canes as a supplemental mobility aid, and to help identify them as blind (i.e., to alert drivers when they are crossing the street at a non-controlled intersection). Using a cane is a different mobility technique from using a dog. A dog is an obstace avoider, and a cane is an obstacle detector. If you're looking for a specific landmark to keep you oriented in a familiar environment (or if you're "looking" around for something like a bus stop sign or a trash can), a cane can be very helpful. In addition to helping detect objects, a cane provides tactile feedback about the pavement surface. You can accomplish a similar effect by scuffing your feet, but it's cheaper to replace a cane tip (they usually cost between $1-$5) than to get your shoes re-soled. Tapping canes can also provide audio feedback (kind of like sonar) that can help keep a person oriented to their environment. For example, I can usually hear where parked cars and power/telephone poles (but not trees for some reason) and other large objects are in a quiet neighborhood.