I would guess a modern franchise has significant telemetry monitoring. If the location is unreachable, easy enough for the mothership to note the site is having issues.

Can a modern restaurant function without internet access to handle credit card transactions?

> Can a modern restaurant function without internet access to handle credit card transactions?

Yes. You can imprint the card and/or record the information for offline processing. We had credit cards before everyone had internet access.

Those technically exist, but who still has them? Are they even still allowed with modern credit card agreements?

What about the percentage of people who no longer carry physical cards and rely on a smartphone/smartwatch credit system?

Heh, I had forgotten about those card imprint machines! Think I used one 2 times in one of my first jobs.