This is a video where we did a little intervention in the Feria del Libro in Bogota. There exists a technique to transform all text into a matrix bar code, called Quick Response code (QR) and which can be generated through the Kaywa Reader website amongst others. Once you take a picture of this code with your smart phone (or a special barcode reader), it will automatically convert the code into text, for example a PDF file. On this day we tried to create awareness amongst the visitors of the fair.