Tassimo no longer recognizes barcodes

Tip, if your Tassimo coffee machine, the barcodes on the capsules no longer recognizes.

If your Tassimo coffee maker no longer recognizes the barcodes on the capsules, even though the small reading window appears to be clean, you should clean the window with cooking oil.

I do not know why that works (I myself had the tip from a forum), maybe the oil settles in small scratches and visually compensates somehow, in any case it worked for us and the machine runs perfectly again.