October 1, 2015 is the mandated deadline for all Stanford merchants with Point of Sale (POS) terminals to use terminal equipment and card reading devices that will accept and read EMV chip cards.
If you use bank-provided terminals, the Credit Card Merchant Services group in the Office of the Treasurer will work with you to upgrade your current equipment to a new EMV-enabled device.
Merchants who use proprietary POS equipment to integrate with specific payment application software must work with their vendors to ensure that all POS equipment is upgraded to accept EMV chip cards by the deadline. The AS PCI Compliance Services group will contact those merchants and oversee the upgrade progress.
Please see this link for a helpful reference about EMV Chip and PCI Standards combining to increase security.