todays news: https://www.zerohedge.com/news/2018-12-29/your-cash-not-welcome-more-retailers-banning-paper-money

news this time last year: https://usa.visa.com/about-visa/cashless.html

https://www.google.com/amp/s/www.forbes.com/sites/theodorecasey/2018/01/02/visas-promoting-a-cashless-future-that-benefits-us-all/amp/