It's not about paying by cash but paying by card offline. How is this going to be implemented I wonder.
On planes they often accept credit cards even when there's no internet. I assume this is a trust in-credit-based system because they don't accept debit cards, i.e. if you are worth being trusted with a card you can have your sandwich now and we will take care of the bank processing once we are on the ground. So maybe this will be like we trust you enough with basic goods that once we get a connection things will be sorted out situation?
On planes they often accept credit cards even when there's no internet. I assume this is a trust in-credit-based system because they don't accept debit cards, i.e. if you are worth being trusted with a card you can have your sandwich now and we will take care of the bank processing once we are on the ground. So maybe this will be like we trust you enough with basic goods that once we get a connection things will be sorted out situation?