Patent ID: 11961076
Assignee: MASTERCARD INTERNATIONAL INCORPORATED
Field: IT methods for management (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A transaction device (306), comprising:
a chip enclosure comprising a reference code portion (326) having a readable reference code associated with a user account;
a chip (308) embedded in the chip enclosure, the chip (308) being separate from the readable reference code portion and having account information associated with the user account and the reference code stored therein; and
wherein the chip (308) is configured to generate a cryptographically signed version of the reference code stored in the chip (308) upon receipt of a request message by encrypting the reference code with a public key of a third party service provider and then digitally signing the reference code using a private key, such that the reference code is retrieved from the cryptographically signed version of the reference code of the chip (308) using the public key of the third party service provider and is sent to the third party service provider to decrypt the retrieved reference code with the private key of the third party service provider for comparison with the readable reference code of the reference code portion (326).