Walking is the most sustainable way to get around a city. It is also the most efficient and equitable way to use city space. Yet today, most major cities are designed far less for those walking than for motorised transport. Digital technologies offer people a way to campaign for city streets built for them, not just cars. In most cities, street signs are aimed at drivers, and often don't show those on foot the quickest way to a destination in a city. Walk [Your City] in the US produces signs that explain how long it will take to walk between popular destinations. Anyone can go on the Walk [Your City] website and order signs for their own city. These can be attached to lampposts or other structures, and also have a QR code which brings up walking directions on Google maps when scanned with a smartphone. As well as helping people to get around the city, it can be used to raise awarness and lobby governments to improve walkability.