This 2024 case study describes how a global payment technology leader improved the retail kiosk/point-of-sale checkout experience by creating two next-generation APIs, Customer Enrollment and Check-In, to support frictionless card-on-file payments and better connect in-store and digital journeys. The Enrollment API lets customers securely store payment credentials after an on-premise transaction following strong cardholder authentication, enabling use cases like recurring payments, loyalty-linked payments, and issuer push provisioning. The Check-In API provides reliable proof of cardholder presence for on-premise card-not-present transactions, improving risk and economic models. Brillio delivered production-grade Java APIs with PostgreSQL and Redis, plus functional and performance testing

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