The problem is that when it works it is so convenient. But a small failure crashes everything. How likely is failure? It probably depends (age, income, mobile c

The problem is that when it works it is so convenient. But a small failure crashes everything. How likely is failure? It probably depends (age, income, mobile coverage, language), but it seems to mostly succeed for most people, which drives the change. I recently travelled to Glasgow to watch cycling. Flight boarding passes, directions, venue tickets, meeting up with people, doing some work - everything - was on my phone and worked well. I could not imagine how that trip would have been if I had to gather lots of bits of important paper to travel with. The first time our sushi place had a QR code, I balked and asked for a menu, but now I have learned that the sushi experience (ordering small portions as you want and need them) works so much better on mobile than getting a menu and waiting for waiters to return to take an order. We trade convenience with risk of being in a pickle if things are broken. So far, the convenience is winning. A lot if this is driven by (as implied in OP) young people who are more tech savvy.