Cash Is Still King (sometimes)

[Retrograde]

3. It is possible to process credit cards without electricity

Some years back, my entire town was without electricity for a full day (due to PG&E putting all the power to the city on the same structure, which was toppled by a plane: they swore that having 3 feeds in the same place was adequate redundancy). One nearby store dug up its old sales slips and card machines, which make a manual imprint of the numbers on the card. Slow, although quicker than writing the numbers on a sales sheet by hand - which also works. I don't know if the Youngs today know about this trick.