Nearly 70% of the world’s population will live in cities by 2050, according to an estimate by the UN. For these cities to work, they’ll need smart transport systems that are efficient and easy to use.

If you’re in Vancouver, you might have a Compass, or in Sydney, an Opal. San Francisco favors the Clipper, while it’s the Navigo in Paris, and the Snapper here in Wellington. But arguably, the most ...