Exactly. Implementing cashless payments and transactions are great, less hassle and less hand on hand contact. For me, its just a matter of practice and proper teaching to everyone, so they will learn and understand how convenient and safe it is. Here in my country, there is already few cities that implemented this cashless payment system especially in the market where most people and vendors used to do the traditional ways of transactions, but are now slowly adopting this digital method and they were grateful that they learned and taught about it for its been safe and convenient according to them. So, its really possible in wherever place we are in, as long as there is internet and signal and a smart gadget of course, it can be made easily.
The only problem I see with going completely cashless is the security of your deposits. The more money is stored at a bank, the higher the risk too lose money in case of bankruptcy. What if the bank is using all the deposit to buy risky assets and loses big time (like with Lehman brothers) in the end we would all hope for the government to guarantee the deposit of the average savings. Imagine all your cards stop working at the same time and you have no more cash left. Of course this is a very unlikely event, but with giving up our beloved cash completely we are also giving up some form of independence. I definitely hope that the regulation of financial firms and banks will be increased once we get completely rid of cash. Maybe a first step could be to not use coins anymore, and only work with bills. Stopping to use all sorts of cash all at once sounds a bit harsh.
