Apple supports since iOS11 reading QR Codes with the internal camera. When creating a QR Code for a QR Code Business Card you can easily scan the QR Code with your iPhone and add the contact to your address book. The following tutorial explains the nessesairy steps how to add a new contact after scanning the QR Code of a business card.
First you need to tap on the contact icon on the QR Code Business Card on the right bottom.
2. Tap on the Profile Image
Now the contact will popup and you tab strong on the profile image or the placeholder if no foto exists until a context menu appears.
In the context menu now tap on Create New Contact
Now you can save the contact to your address book by tapping on Done
15 seconds video tutorial
The following short video shows you an alternative way how to add a contact in 15 seconds to your address book.