Very advanced and very green. Save carbon. They should get credit for this. Why Singapore haven’t started. Needs initiatives from Government. May be can get carbon credits for this effort as a return. No offend
https://www.straitstimes.com/asia/e...green-dont-burn-hell-money-use-mobile-payment
https://www.straitstimes.com/asia/e...green-dont-burn-hell-money-use-mobile-payment