Polarizador is a machine that asks questions, stores the answers and returns printed reminders of the interaction. It captures and compares information to create opposite opinions about any subject.
Each visitor is identified by the system using a bidimensional barcode. When the machine reads a barcode, it picks one from a limited set of predefined questions and reads it aloud using a text to speech application. The user responds the question by pressing one of two buttons (yes or no), his answer is stored in a database for further comparison and statistics. Polarizador prints a receipt that contains a comparison of the visitor's response with others stored in the database and updates a simple pie chart projected on the wall.