9to5mac:

When entering a credit card number into a form online to, for example, make a purchase, Safari already allowed users to quickly select credit cards stored in its Passwords & AutoFill settings. You can still do that, but in iOS 8 you’ll now also have the option to select “Scan Credit Card” and snap a picture of the card. Apple then uses optical character recognition of sorts to input the number into the text field in Safari.

That’s pretty cool!