"711 has been affected by the outage … went in to buy a sandwich and a coffee and they couldn’t even open the till. People who had filled up their cars were getting stuck in the shop because they couldn’t pay."
Can't even take CASH payment without the computer, what a world!
Depends if the retailer wants to take the chance of all that.
There are stores in many places in the country with sporadic internet or where outages are not uncommon, and where you would want to configure the terminals to still work while offline. In these cases, the payment terminals can be configured to take offline transactions, and they are stored locally on the lane or a server located in the store until a connection to the internet is re-established.
They use Windows as a part of their server infrastructure?
Luckily I can just give someone a paper wallet containing crypto. No transactions, no traceability, no rules.