QR codes are handy on your business card but when you leave home or the office and have no business card on hand, using a QR app to create a QR code is nice, but there are times when you might not even have your phone handy to show a future customer or client your website. Adding a QR code image to your smartwatch or phone is pretty easy with a QR code app like QR TIGER, and it allows being able to add photos to identify QR's. I added them to a shared photo album from my iPhone's photos.