So, these are two mobile applications, for two types of users — a store visitor (any physical store — from a hypermarket to a local general store) and the operator of this store.
If you went to the store today for groceries, you take a basket, collect the products that you need in it, open the refrigerator, take milk, then transfer everything you typed to the cashier at the checkout, he scans, gives your products from the other side of the checkout, you collect and that’s it. In general, a familiar process. At the same time, you do not know — who «pawed» the windows, products, a basket or a cart before you, in the conditions of a covid, a pandemic, the chance that you will bring the virus home is quite large and cannot be calculated.
In our case, you go to the store, open the application, scan the cookie barcode, add the application to the cart, and so on down the list. At this time, the store operator with his application sees the fact that you took a cookie, checks for availability, confirms, that is, in parallel with how you collect your products into the application basket, he collects these products for you in a package. At the end of the session, you press «ready», he sees it, puts the rest of the products and hands it over to you. If we assume that the operator is healthy and he takes food for you not from public counters but from a warehouse where no one touched them, the probability of bringing the virus home is obviously much lower.