In Rio De Janeiro, codes made up of black and white tiles have been installed as helpful guides.

QR codes have been embedded into the traditional mosaic sidewalks of Rio De Janeiro, to help tourists learn more about the city. The codes are made up of black and white tiles, and when scanned with a smartphone app, they provide information in Portuguese, Spanish, or English, along with a map of the local area.

The Huffington Post reports that Rio De Janeiro plans to embed thirty QR codes near to beaches, vistas, and historic sites around the city. The first one was installed last week at Arpoador, a huge boulder at the end of Ipanema beach:

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