"I made a series of posters that I often hang around the room when I facilitate workshops. It's fun for participants to get up and scan them at break time. Each poster features a quote about education or technology. Part of the quote or its author is missing and has been replaced with a QR code."
The first two-dimensional bar codes, or QR codes, as they're known, were installed Friday at Arpoador, a massive boulder that rises at the end of Ipanema beach. The image was built into the sidewalk with the same black and white stones that decorate sidewalks around town with mosaics of waves, fish and abstract images.