Toying with barcodes

Jemandem einen Strich auf die Rechnung machen

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About: Toying with barcodes from 2008-01-12

The talk focuses on 1D and 2D barcode applications with interference possibilities for the ordinary citizen. Ever wondered what is in these blocks of squares on postal packages, letters and tickets? Playing with them might have interesting effects, reaching from good old fun to theft and severe impact.