This is very possible. The Blockchain technology is a revolutionary one with a lot of significance. As the people become more familiar with it, the adoption and utilization of the Blockchain and cryptocurrency will increase which will gradually lead the world to cashless.
.
I think on going, just started through mobile apparatus and will be gradually introduce to many people. In the supermarket and groceries, if you do not have cash , you just can pay through mobile . No need to go to the bank and withdraw cash. It is easier also to transfer the exact payments, no need to wait for the change. Although it is not easy for the first timer , it would be convenient for them in the future.