I just returned from Zurich[1] which involved, of course, two pair of International entry/exit.<p>While I was there, I availed myself of rapid antigen testing and my proof of vaccination with the canton of Zurich to attend several jazz shows and concerts (!) unmasked and with no covid restrictions.<p>I used QR codes throughout.<p>QR codes printed on paper, QR codes on a website that I pulled up in my phones browser, and once I even used a <i>picture of a QR code in my photoreel that I pinch-zoomed into and properly scanned</i>.[2]<p>It appears that there is no use for, nor appetite for, covid vaccine passport apps.<p>This makes me very happy because I have envisioned, through the entire pandemic, some perfect storm of pairing a smartphone to yourself, as an individual, and tying identification to it and being forced to register the phone and the app and yourself and the SIM card ... and <i>what a mess</i> that would end up being.<p>Instead, <i>it appears</i> we are all just going to produce QR codes in whatever way works best for us and if the scanner beeps and turns green, nobody cares what else is going on.<p>[1] <a href="https://twitter.com/rsyncnet/status/1435981763864584201" rel="nofollow">https://twitter.com/rsyncnet/status/1435981763864584201</a><p>[2] ... and just to be clear, the photograph showed an entire printout with my name, etc., on it - so it still was a proof of identitiy. Once that was cleared up, she zoomed in on the QR code and scanned. Easy.