| 摘要 |
An electronic transit fare payment system is disclosed. The system comprises a plurality of mobile devices adapted to store a transit fare payment application and a server in wireless communication with the mobile devices. The transit fare payment application decrements a transit fare funds balance by a fare amount after completing a transit ride, wirelessly requests a top-up of the transit funds balance when the transit funds balance drops below a threshold, wirelessly receives a top-up instruction, increments the transit fare funds balance in response to executing the top-up instruction, and wirelessly transmits a top-up confirmation. The server receives the request for the top-up, charges the top-up to a credit card associated with the mobile device requesting the top-up, transmits the top-up instruction to the mobile device requesting the top-up, receives the top-up confirmation. When the top-up confirmation is not received, the server requests top-up confirmation from the mobile device. When the mobile device does not reply to the request, the server analyzes a transit fare transaction history associated with the mobile device to determine that the top-up has completed. When the top-up is not confirmed, the server rolls-back the charge of the top-up to the credit card associated with the mobile device.
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