The characteristics of these learning applications, as previously said, make them unstoppable. More comfortable learning methods will emerge as smart technology becomes more widely used.
The most obvious advantage with the QR code system in a restaurant is that it limits the number of things the customer has to touch when they are dining. Usually a menu is passed around from person to person which involves a lot of touching which people are afraid of these days because of the pandemic. Whereas a QR code placed on an easy to spot place is best for these kinds of situations where anyone can get the menu by just scanning the QR code.