Cash is dead. Digital money is passé and app-based money transfer is the reality. No, I am not exaggerating – the last two months have been a clear indication of things to come, especially when it comes to the way you transact money. So, here is my experience with Bharat Interface for Money or BHIM app, a smart way of invoking the man who was instrumental in writing the constitution of India -- Dr B R Ambedkar.