A system for enabling user interaction with computer software. The system includes a sensing device and a computer system. The computer system generates print data and transfers it to a printer. The printer prints a form by printing information related to an interactive element and coded data indicative of the interactive element in response to the print data. The sensing device has an image sensor for capturing images of the coded data, which is coincident with the information, and a processor for identifying the coded data from the captured images, determine an orientation and position of the coded data, decode the coded data, and generate indicating data using the determined information. The indicating data, which is indicative of the interactive element is used by the computer system to identify the interactive element and perform a corresponding action.