https://www.weforum.org/agenda/2017/10/sweden-could-stop-using-cash-by-2023?utm_content=buffer40bef&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer
Advanced countries might try to go cashless but it will take more years before they can fully implement it. There must be a hundred percent availability for the technology that will be use for implementing cashless transaction in the whole country to make it succeed. But cash might still be existing in the majority part of the world because people will not easily accept this kind of cashless transaction.