- This is a serious situation. Do you mind if we take this seriously?

[rakhirhif8963]

- Tell me, Elena. What happened?

— As you probably know, my mother owns a small cafe near the university. Students drop in there from time to time to grab a bite to eat. At my suggestion, she introduced the ability to not only pay with smartphones by scanning a QR code, but also the ability to order/reorder something while already sitting in the cafe. For this, a QR code is glued to each table, you scan it, choose what you want from the menu, and the waiter immediately brings it to your table. It’s convenient, you don’t have to call and wait for the waiter, chase him around unnecessarily, the kitchen receives the order faster and plans the load better. But there is a small “but”. Recently, orders have appeared that no one ordered. Someone randomly orders all sorts of random dishes for random tables. As a result, the kitchen cooks what no one needs, awkward situations with customers arise, the reputation of the establishment suffers...


- I couldn't even ask for such a thing. Of course! Mom will be happy.

- Excellent. Ask Karl and Alice to do this. Tell germany mobile database it's my order.

Two days passed.

— Boss, everything there is simple and complicated at the same time. Judging by what we managed to find out, orders are placed from a neighboring cafe. Competitors are jealous that students don’t go to them. So they decided to screw things up — they photographed the QR codes of all the tables in advance, stole the menus and started placing fake orders.

- What do you suggest?

— What do we propose? Change the work algorithm a little and check that the order came from this particular cafe. This will complicate the work algorithm a little, but safety is above all, isn't it?

— Can you help?