I actually came up with the SmartCamber gauge before the SmartStrings - I needed something to replace my old trusty Dunlop gauge that had seen better days, and wanted something digital and could be used to measure the angle of other things on the car also. Proper camber settings are significant, not just for good tire wear for a street car but to get the most from a tire on a car that is auto-crossed or track driven - it's one of the most fundamental changes (along with toe angles) to improve handling. In any of these conditions, tire wear is greatly affected by proper or improper camber settings - and lap times.
A hands-free adapter is available which can be added in the options menu or purchased separately. The photo showing the product with a tire shows both SmartCamber and the HFA adapter.
A carrying case is now available and may be added in the options menu.