What surprised here is that Android doesn’t have a native QR scanner. I’ve always assumed that iOS was late to the game and that Google Search/Lens handled QRs since 1999. Is that not the case (anymore)?
As you can imagine, when all the covid checkins started, I couldn't find this. Everyone would say to me "just open the camera on your iPhone it's easy" as though it was a given that every visitor was using an Apple phone.
I went through three different QR apps based on what I found on the play store and all of them blasted me with inappropriate ads I kept wishing I didn't open in public. A bit if visibility in the UX would have solved this.