Primario restaurant in Barcelona, uses QR codes to facilitate the public an updated daily menu. Many curious have read it to guess whatpara is hidden behind this QR code. Whether it is day or night, as if it is sunny or cloudy, you can read the poster because it is backlit.

The company PepsiCo has created a massive campaign to promote its soft drink Pepsi through QR codes in the UK. Aiming to promote its product it has prepared 400 million of Pepsi cans with QR codes printed on them, that allow prizes to those who read them.
Pepsi has made a great campaign involving the codes [...]

McDonald’s has conducted a nutritional information campaign with QR codes in Japan. With the aim of informing its consumers about the nutritional content of their products, has created a web site adapted for mobile devices. Within this space, which is available both in the traditional way and through QR codes, which are printed on [...]

QR codes can be associated to different products. On the photograph you can see one associated to a wine bottle that allows us to obtain more information from the product..