I agree. I don't use them much. But they are a very useful way to share information easily. When I was in between business cards I created a qr code of a vcard

I agree. I don't use them much. But they are a very useful way to share information easily. When I was in between business cards I created a qr code of a vcard of my contact info and saved it as the image for my lock screen. I had an instant conversation topic with me at all times and people seemed to appreciate the creative use as well.