product's identification for visually impaired

hello all,
this is my first project (studio project), i am starting on a project for visually impaired people. the projects aim is to create a system for visually challenged people so that they can read information about products (expiry date and so) with the help of tactile information strips.

i need information about the fallowing.

  1. are there any tactile product identification strips available now? (except the yellow raised triangle which is a universal standard)

  2. any such project, or projects related to visually challenged people being done by some one?

  3. any international laws supporting this cause.

thank you guys in advance