OpenDataCam is an accessible, affordable and transparent solution that enables everyone to quantify movements in urban environments. Beyond many different kinds of applications, it can be used to analyze traffic flows and on that basis shape urban transformation processes.
Technically, the tool uses computer vision to quantify and track moving objects. Thereby, it never records any photo or video data and processes everything locally. It features a friendly user interface and is fully documented as an open source project to underline transparency and full disclosure on privacy questions.
This site documents the design of its visual identity, user interface as well as some strategic considerations.