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    Implementing SDK Payer Authentication
    This chapter summarizes the process of integrating SDK Payer Authentication services into
            your mobile application. Payer authentication services use the Mobile SDK for iOS or
            Android to facilitate the authentication. New SDK versions are frequently released and
            you should ensure that you stay current with the latest release. One way to stay
            informed on about new releases is to subscribe to a distribution list to be informed of
            updates and other product announcements. You can subscribe by going to this link: Cardinal SDK Notifications.
Implementing the SDK in your mobile application requires either Android or iOS platform
            application programming skills. Android API 21 or iOS 9 and XCode 8 are required.
The SDK is only designed to handle EMV 
3-D Secure
 2.x transactions.