SB n°318 ERRD PCD Measurement in Book C-2

EMV® Specification Bulletin No. 318 First Edition April 2026 ERRD Time Measurement by PCD for Kernel 2 This Specification Bulletin announces an alternative mechanism for measuring the time taken by the EXCHANGE RELAY RESISTANCE DATA command. Applicability This Specification Bulletin applies to: • EMV Contactless Specifications for Payment Systems, Book C-2, Kernel 2 Specification, Version 2.11 – June 2023. Related Documents • None Effective Date • 1 July, 2026 Description This Specification Bulletin announces an alternative mechanism for measuring the time taken by the EXCHANGE RELAY RESISTANCE DATA command. With the alternative mechanism the kernel delegates the measurement of the EXCHANGE RELAY RESISTANCE DATA command to the PCD. How the time is exchanged between the PCD and the kernel is implementation specific. © 2026 EMVCo, LLC. All rights reserved. Reproduction, distribution and other use of this document is permitted only pursuant to the applicable agreement between the user and EMVCo found at www.emvco.com. EMV® is a registered trademark or trademark of EMVCo, LLC in the United States and other countries. Page 1 Specification Changes Change S3.63 as follows: S3.63 A timer is started to measure the time taken by the EXCHANGE RELAY RESISTANCE DATA command Start Timer () This step can be bypassed if the time measurement of the EXCHANGE RELAY RESISTANCE DATA command is performed by the PCD of the terminal or if the start time is provided by the PCD. Change SR1.10 as follows: SR1.10 Stop Timer Compute Time Taken from the start and stop times. Alternatively, the stop time or the Time Taken may be provided directly by the PCD of the terminal. The method by which these data could be exchanged between the PCD and the terminal is implementation specific. Change SR1.26 as follows: SR1.26 A timer is started to measure the time taken by the EXCHANGE RELAY RESISTANCE DATA command Start Timer () This step can be bypassed if the time measurement of the EXCHANGE RELAY RESISTANCE DATA command is performed by the PCD of the terminal or if the start time is provided by the PCD. © 2026 EMVCo, LLC. All rights reserved. Reproduction, distribution and other use of this document is permitted only pursuant to the applicable agreement between the user and EMVCo found at www.emvco.com. EMV® is a registered trademark or trademark of EMVCo, LLC in the United States and other countries. Page 2 Legal Notice Unless the user has an applicable separate agreement with EMVCo or with the applicable payment system, any and all uses of these Specifications is subject to the terms and conditions of the EMVCo Terms of Use agreement available at www.emvco.com and the following supplemental terms and conditions. The license granted in the EMVCo Terms of Use specifically excludes (a) the right to disclose, distribute or publicly display these Specifications or otherwise make these Specifications available to any third party, and (b) the right to make, use, sell, offer for sale, or import any software or hardware that practices, in whole or in part, these Specifications. Further, EMVCo does not grant any right to use the Kernel Specifications to develop contactless payment applications designed for use on a Card (or components of such applications). As used in these supplemental terms and conditions, the term “Card” means a proximity integrated circuit card or other device containing an integrated circuit chip designed to facilitate contactless payment transactions. Additionally, a Card may include a contact interface and/or magnetic stripe used to facilitate payment transactions. To use the Specifications to develop contactless payment applications designed for use on a Card (or components of such applications), please contact the applicable payment system. To use the Specifications to develop or manufacture products, or in any other manner not provided in the EMVCo Terms of Use, please contact EMVCo. These Specifications are provided "AS IS" without warranties of any kind, and EMVCo neither assumes nor accepts any liability for any errors or omissions contained in these Specifications. EMVCO DISCLAIMS ALL REPRESENTATIONS AND WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT, AS TO THESE SPECIFICATIONS. EMVCo makes no representations or warranties with respect to intellectual property rights of any third parties in or in relation to the Specifications. EMVCo undertakes no responsibility to determine whether any implementation of these Specifications may violate, infringe, or otherwise exercise the patent, copyright, trademark, trade secret, know-how, or other intellectual property rights of third parties, and thus any person who implements any part of these Specifications should consult an intellectual property attorney before any such implementation. Without limiting the foregoing, the Specifications may provide for the use of public key encryption and other technology, which may be the subject matter of patents in several countries. Any party seeking to implement these Specifications is solely responsible for determining whether its activities require a license to any such technology, including for patents on public key encryption technology. EMVCo shall not be liable under any theory for any party's infringement of any intellectual property rights in connection with these Specifications. © 2026 EMVCo, LLC. All rights reserved. Reproduction, distribution and other use of this document is permitted only pursuant to the applicable agreement between the user and EMVCo found at www.emvco.com. EMV® is a registered trademark or trademark of EMVCo, LLC in the United States and other countries. Page 3