These colorful stickers are helping blind people find their way around | MIT Technology Review

Smart cities

These colorful stickers are helping blind people find their way around

If you have a cell-phone camera, the NaviLens system can give you vital information about where you are.

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June 6, 2019

A collection of Navilens’s colourful stickersNavilens

Over the last few months, strange pixelated stickers have been spreading across Barcelona’s transit system. Each is a 5×5 stack of brightly colored squares on a black card, like a disintegrated Space Invader.

Across the city’s network of buses, trains, trams, and a funicular that clambers up the steep hillside of Montjuïc, the tags are stuck near exits, platforms, [...]

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