US 12,443,821 B2
Systems and methods for use of capacitive member to prevent chip fraud
Daniel Herrington, New York, NY (US); Stephen Schneider, Midlothian, VA (US); and Tyler Maiman, Melville, NY (US)
Assigned to CAPITAL ONE SERVICES, LLC, McLean, VA (US)
Filed by Capital One Services, LLC, McLean, VA (US)
Filed on Apr. 15, 2024, as Appl. No. 18/635,108.
Application 18/635,108 is a continuation of application No. 17/852,019, filed on Jun. 28, 2022, granted, now 11,989,607.
Application 17/852,019 is a continuation of application No. 17/194,024, filed on Mar. 5, 2021, granted, now 11,403,503, issued on Aug. 2, 2022.
Application 17/194,024 is a continuation of application No. 16/723,792, filed on Dec. 20, 2019, granted, now 10,977,539, issued on Apr. 13, 2021.
Prior Publication US 2024/0256818 A1, Aug. 1, 2024
Int. Cl. G06K 19/073 (2006.01); H01L 23/00 (2006.01)
CPC G06K 19/07318 (2013.01) [H01L 23/573 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of preventing chip tampering fraud, the method comprising the steps of:
measuring, by an applet in the memory of a chip installed in smart card, an initial capacitance value from the smart card;
measuring, by the applet in the memory of the chip installed in the smart card, a subsequent capacitance value from the smart card;
determining a chip tampering attempt by comparing the initial capacitance value against the subsequent capacitance value; and
updating the initial capacitance value based on a determination that a change in the initial capacitance value over time is a result of normal wear-and-tear of the smart card.