Client-Side Implementation
Availability
Masterpass, Amex Express Checkout, and Visa Checkout have been replaced with the latest unified
checkout experience offered through Visa known as Secure Remote Commerce. If you were previously
using Masterpass or Amex Express Checkout, you will need to integrate with SRC. If you were using
Visa Checkout, you do not have to change your integration as SRC is an updated version of Visa
Checkout. As such, you may see Visa Checkout referenced elsewhere in our documentation. SRC is
currently in a limited release to
eligible merchants, and the API is subject to change. It is available in iOS v4+ and JavaScript v3+.
Contact us to request access to the release.