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Whats that funny barcode to the right of my picture?

April 26, 2017barcode funny picture right

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Whats that funny barcode to the right of my picture?

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This “two-dimensional” barcode is automatically generated by the Stamp Expressions™ Printer and contains digital data specific to your printer, and the stamp. It is used by the United States Postal Service to verify the authenticity of the postage.