I recently came across this fascinating post which I am sharing because I think it might be of interest to my own readers.tactile markings on currency is something that has fascinated me for a while and this post is a fantastic explanation and historical account of it. I definitely encourage anyone with interest in the subject to check it out and to follow this blog.

Among the most recent tactile currency markings, a new trend is emerging: indicating the value using dot patterns. The idea is not new, it has been …

New trend in tactile currencies