[Past experiment] Warn blind people of obstacles in the street

While brainstorming Project Lighthouse, we envisioned a device that would help blind users navigate in the street by informing them of obstacles along the way. We experimented with the idea then decided to head in another direction for the time being.

Opening this topic to document what we achieved, and why we decided to pick another prototype. If we ever decide to resume our work in this direction, let’s make sure that this thread contains everything we need.