did you search a little in SDN first, before asking: ??
In Youtube you find videos about your topic.
You can use the new bar code technology that is described in Notes 430887 and 645158. In this way, SAP creates a graphic that contains the lines of the bar code. SAP then prints this graphic. To be able to use this option, you must use transaction SE73 (system bar codes) to create a new system bar code.
You need to use the new barcode technology with the barcode type RFIDGEN2 as per the following SAP note:
1256433 - Printing RFID from Smart Forms: Bar code type RFIDGEN2
See the following SAP note for a suitable device type:
1135106 - Printer Vendor Wizard Note: SATO