The screenshot on the right shows the Rattler Scanner app's main view. Live video can be used to scan a slab's number and populate the upper text fields. Clicking on either button will launch the PCGS apps or websites if the apps are not installed to look up the coin. Alternatively, you can import a photo to read the number. Multiple numbers can be read at once and the user can pan and zoom the image to isolate a specific slab. The 1 in the lower left is the number of coin numbers currently identified.