How do you return a package using the printerless or code scan

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If you receive a prepaid return label as a QR code, you can take that QR code to your local post office, where they will scan the QR code and then print out a label to affix to your package. If your local Post office can not deal with QR codes, and you have a printer available, you can print the standard  barcode version of the label  and glue or tape it to your package.