Which statement describes a closed-loop payment system?

Which statement describes a closed-loop payment system?

• A. The payment method is linked to the system and can only be used within that network
• B. The issuer can be different than the acquirer
• C. The gateway handles all transfers
• D. A prepaid transit card can only be used within its own network

Answer: (D)

Closed-loop payment systems are self-contained networks where the issuer, the accepting points, and the processing all happen within a single controlled system. The key idea is that the value and the transactions stay inside that network, with no reliance on external networks or third-party processors to complete the payment. A prepaid transit card is the quintessential example: you load value onto the card and can spend it only on that transit system’s machines, inside that network. It cannot be used elsewhere, which clearly shows the whole process operating within one closed environment. The other descriptions lean toward open-loop or more general processing setups. For instance, a system where the gateway handles transfers, or where the issuer can be different from the acquirer, describes interoperability with external players or cross-network settlement, which is characteristic of open-loop networks rather than a closed loop. Saying a payment method is linked to a system and usable only within that network is similar in spirit, but the prepaid transit card example provides a concrete, widely recognized illustration of a truly closed loop.

Closed-loop payment systems are self-contained networks where the issuer, the accepting points, and the processing all happen within a single controlled system. The key idea is that the value and the transactions stay inside that network, with no reliance on external networks or third-party processors to complete the payment. A prepaid transit card is the quintessential example: you load value onto the card and can spend it only on that transit system’s machines, inside that network. It cannot be used elsewhere, which clearly shows the whole process operating within one closed environment.

The other descriptions lean toward open-loop or more general processing setups. For instance, a system where the gateway handles transfers, or where the issuer can be different from the acquirer, describes interoperability with external players or cross-network settlement, which is characteristic of open-loop networks rather than a closed loop. Saying a payment method is linked to a system and usable only within that network is similar in spirit, but the prepaid transit card example provides a concrete, widely recognized illustration of a truly closed loop.