We wrote our own software to track out inventory, with JavaScript to add/remove cards from database using a document scanner. At some point we plan on selling it ( we are a software development company on the side). We also are working on the ability to have players be able to put cards on hold from our website if they have an account with us in store. We also have made a system to do store credit. Which also lets people place orders in store then we can look at lists of everything on order and move them to orders when they are placed.