# Julia and braille

**URL:** <https://discourse.julialang.org/t/julia-and-braille/77002>\
**Category:** Diversity & Inclusion\
**Created:** [February 24, 2022, 1:08am UTC](https://discourse.julialang.org/t/julia-and-braille/77002 "2022-02-24T01:08:09Z")\
**Posts on this page:** 1\
**Showing post:** 37

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**Author:** ![g2g](https://avatars.discourse-cdn.com/v4/letter/g/41988e/32.png) [@g2g](https://discourse.julialang.org/u/g2g)\
**Post date:** [March 10, 2023, 6:03pm UTC](https://discourse.julialang.org/t/julia-and-braille/77002/37 "2023-03-10T18:03:26Z")

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Yet another quick update:

- Stanford University’s Shape Lab has [demonstrated](https://youtu.be/3eCkGvvMGA4?t=969) a prototype of a tactile display, but the parts alone cost $6000. So it has about the same order of magnitude cost as the currently available 80 character refreshable braille devices that cost $15000. They both use expensive materials and technology.
- In contrast, it seems possible to make a tactile display that costs a factor of 100 less by using really cheap materials and technology that are configured by good designs in geometry. (After all, a tactile display is just a bunch of small geometry problems.) For more about the development of good design in geometry, see this [post](https://discourse.julialang.org/t/essay-julia-and-projective-geometric-algebra/92767).

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