[rippercushions]

I went to an exhibition at a museum today. There's a distance of maybe 5 meters between the ticket office and the exhibition entrance. Instead of getting a paper ticket and handing it over at the gate, I had to tell the clerk my phone number, wait a few moments to receive one SMS for each person, click on a link in each SMS to retrieve a separate per-person QR code that could be scanned at the gate, and then click back and repeat individually for everybody in my group. Such efficiency!

[dTal]

Yes, they efficiently extracted your phone number.