Entersekt's 3-D Secure SDK is an EMVCo-certified solution designed to facilitate secure mobile app-based transactions. 3-D Secure SDK enables easy integration of merchants' apps with 3DS Servers, handling cryptographic and security functions during app-based transactions as specified by the EMVCo protocol. It is compatible with iOS and Android platforms and compliant with EMV 3DS versions 2.1 and 2.2.