I have a few questions to answer before I open the store. What should I do when the power goes out? How do I accept payments? Share with me those who have been in this business for a long time.
As for payment, I think everything in the stores is calculated and thought out in case of a blackout. In general, everyone has a phone, and programmers have invented such a programme as smartpos https://m4bank.com/smartpos It's a great way to accept payments, transfer payments and monitor everything. Try it.
Regarding payment, I believe that every decision made in stores is assessed and considered in the event of a blackout. Most people own a phone, and programmers have created something called smartpos.