Offline transactions are available in many systems up to certain limits defined by both th card and the terminal. They get reconciled later. Merchants not havi

Offline transactions are available in many systems up to certain limits defined by both th card and the terminal. They get reconciled later. Merchants not having connectivity is a rather small problem in this day and age really, with ubiquitous mobile data connections. (Yes, I am aware someone will be along shortly to tell me they have yet-another-edge case where it doesn't work for them. I don't really care, for the vast majority it is a massively convenient way to conduct business.)