Designing card holders using Faraday cage principles to block hacking and protect data from theft.

Abstract

With the growing use of contactless payment methods, such as credit cards that allow users to make payments by simply swiping, security concerns have increased. One of the major issues is “card-not-present fraud,” where criminals use NFC readers to steal money without the cardholder’s knowledge. Since victims often do not realize the fraud until they check their transaction records, improving protective measures is essential. While many studies have explored payment security, few have considered the connection between Faraday Cage technology and cardholder protection. Our research integrates the Faraday Cage principles into card bag design to reduce the risk of data theft and unauthorized transactions. Two distinct experiments are demonstrated in this paper, which are using a specific electromagnetic wave transmitter and receiver to calculate the shielding effectiveness of Faraday Cages with various materials, and using pings received to display the relationship between sizes of mesh holes of the cage and their shielding effectiveness. This paper provides several dimensions for the producers of card bags to optimize the design of card bags based on Faraday Cage.