The Delhi High Court on Tuesday directed the Centre to place before the RBI suggestions made by the visually-impaired on ways to distinguish between various denominations of currency notes with help of features like cut edges or different shapes and sizes.
Source: http://www.thehindu.com/todays-paper/tp-national/tp-newdelhi/put-proposals-of-visually-impaired-before-rbi-hc/article23498051.ece