Yes, you can print barcodes on DK1221 labels. Follow the steps below for Windows and Mac:   Windows   Launch P-touch Editor on your PC Click on the Bar Code button, and the Bar Code Properties dialog will appear on your screen. Click on the Protocol tab and choose the type of barcode you want to make. Click on the Input tab and, in the Data: field, enter a value and then click on the OK button. The barcode will appear in the layout window. Configure the size and position of the barcode using your mouse. Click the Print button, and your Brother QL printer will start printing the barcode.   Mac   Launch the P-touch Editor from your Mac computer Select Insert – Bar Code. The Bar Code dialog will appear on your screen. Click on the Protocol tab and choose the type of barcode you want to make. Click on the Input tab, enter the barcode data, and then click on the OK button. The barcode will appear in the layout window. Configure the size and position of the barcode using your mouse.  Click the “Print” button, and your Brother QL printer will start printing the barcode.