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I work in Higher Ed IT. Used this to make a 3D Printed campus map two years ago for a fully blind student. I cleaned up the OpenStreetMap data in our area and it worked great!

I wonder how visually impaired to the degree that they need a tactile map would orient themselves on location.

With their canes, sound and tactile information, for example. I'm sure you've seen visually impaired people around and about on their own, no?

Great to see that Touch Mapper is being developed and maintained actively. I've used it (I think - maybe it was something similar) years ago together with a blind student and it was very helpful for them.

Man, do this in a digital version (like a braille monitor), it would be incredible.

Touch Mapper – open-source 3D printed tactile maps for the visually impaired