The step is very good because:
1. Fake currency stashed by Pak and sent into India wasted. Big problem avoided.
2. Those who have stashed lots of black money in their home will face big problem as they cannot exchange all black money and it's gone. Very hard to convert to white money as everything will be monitored with indetity. Black momey people in big trouble. Many people are calling my father as he is in bank.
I don't see my previous reply so posted again