Register API for iOS v1.2 released (2016-11)
Version 1.2 of the Register API is now available on iOS as of Square Register version 4.53.
Version 1.2 includes:
Support for linking customers to transactions using the new
CARD_ON_FILEtender type to allow charging a previously-stored card instrument. Learn more about how to use Card on File with Square.
For more information: