In a decades time I believe that digital identity will be as important as physical Identity if not more. Today we do have a National identity in some digital form , which is some what well accepted although security is a big concern (for which India will have a solution for sure).
One of the important initiatives that this government took was taking India into digital money in a big way. Today we have some of the coupons which are provided by many companies (such as sodexo & edenrad), which are still in physical form.
Since many of the mom & Pop stores have now started embracing digital money, we have a possibility of converting these coupons into digital format. There are many advantages in converting it to digital format, like if you have ur mobile you have the coupons (no need to separately carry them). Digital payments are easy to track for the business as well, in addition with GST kicking in the shopkeepers will be better off with digital payments. Digital money always is environmental friendly, and lastly the coupons have an expiry date which is only 1 year with digital coupons the expiry date can be more than 2 years or so.