OnScreen Barcode Scanner lets you scan barcodes directly from your Mac's screen. Ideal for checking your barcodes without having to print them out for use with a cumbersome hand scanner. Simply click the "Scan" button and select the screen area to scan. It's as easy as taking a screen shot. OnScreen Barcode Scanner will display the type and number of any successfully detected barcodes in the selected area. Supported barcodes are: EAN-8 EAN-13 UPC-A UPC-E ISBN.