The Cardign app makes adding a person's contact information as
simple as snapping a photo of them. Cardign, developed in
Canada, allows you to not only get the name and email address of
someone using only their photo, but it also connects you to
their social media profiles.  In order to retrieve a person's
contact information/social media profiles, they must be signed
up on Cardign. If they are, the app will be able to recognize a
photo of their face and will automatically sync their
information to your phone. If you take a photo of someone who
isn't signed up with the Cardign app, then you will have to
manually input their information. You can learn more about the
app, available for free in the Apple App Store, by watching the
video.