I was in New Zealand recently, and saw a similar concept, people there are using it regularly, I was quite happily surprised to see Imint doing something here in India.
I’ve got one, got it delivered prompty, and I swipe it regularly, in one year I’ve already got about 2150 points. I travel frequently, I use it for car refueling as well, and any other place I can.
To be fair, it is all free points for me for something I already need or use, eventually I can buy some good stuff from their shop, at imintpoints.com
Also I heard a major bank here has financed Imint, which I think is a great initiative. In New Zealand everyone had a similar card and it is part of their life to swipe it and I think it will soon happen in our country as well. I am happy with the card, the concept, and so far, the services as well.