Card Fingerprint

We've added a new field to the Payment method object called fingerprint. It is a field that represents your customer's card throughout your organization. When a customer enrolls a credit card multiple times related to one or many Yuno accounts, multiple vaulted_tokens will be generated, but the fingerprint lets you identify when the same card is in different scenarios.

"card_data": {
                    "holder_name": "John Doe",
                    "iin": "41111111",
                    "lfd": "1111",
                    "number_length": 16,
                    "security_code_length": 3,
                    "brand": "VISA",
                    "issuer_name": "JPMORGAN CHASE BANK N A",
                    "category": "CREDIT",
                    "type": "CREDIT",
                    "fingerprint": "d244e20d-43a1-43f7-9b48-0a76423be35e"
                },

Fingerprinting involves creating an identifier for a specific payment method without disclosing any sensitive information. Unlike vaulted_tokens, fingerprints cannot be used to make payments, making them a secure representation of payment method details.

Fingerprints are highly valuable for:

• Tracking if a user is using the same card for multiple customer-present payments, suggesting that a vault could greatly improve the user experience.
• Checking if a particular card is being used by multiple customers, which could indicate fraud.

You will also find the fingerprint in the payment response when a transaction is made using an enrolled credit card.