Disable Fallback to Pan Key Entry (PKE)
When a magnetic swipe card fails to read, the normal process flow is for the payment device to prompt to enter the card details manually (called Fallback to PAN Key Entry or PKE).
Acceptance of fallback to PKE transactions is no longer mandatory with most card schemes. So, from IPC version 2.3.2 onwards, there is an option to Disable fallback to PKE. To configure this option, use the YESEFTConfig utility (along with other configuration options).