1) This is a QR Code (Quick Response Code), a barcode in 2D that can be read by a cell phone. In the browser of the device, type in http://www.i-nigma.mobi and download a free program that identifies the QR-Code; in the iPhone, enter the Apple Store and search for an application that reads the QR-Code.

2) Then, open your application folder and select the icon i-nigma. The program automatically selects the camera on your device.

3) Focus on the code as if you were going to photograph it, and the sound will confirm that your cell phone has recognized the QR-Code.

4) Ready: the site of the city of São Paulo will be with you wherever you go.