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

sisir