A downloaded app controls a device to recognize whether a connected card reader is an unsupported card reader or whether an unsupported card is supplied to the connected card reader. The app automatically generates support for the unsupported card reader or unsupported card by reading the identifying information from the unsupported card reader or unsupported card, modifying an existing driver support file by adding the identifying information to the existing driver support file to create a modified driver support file, and testing the unsupported card reader or unsupported card using the modified driver support file. If the tests are successful, the app then supplies the modified driver support file to other devices separate from the printer.