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China UnionPay
 Single Fare Transaction Workflow

The
China UnionPay
 (CUP) single fare transaction workflow begins when the rider taps a payment card on a contactless terminal at a point of access to a transit system. This workflow is a Pay As You Go (PAYG) model. Tap-in and tap-out data are collected and sent to the transit system for fare calculation after a single trip.

Figure:

Single Fare PAYG Transaction Workflow
Diagram showing Single Fare Transaction workflow
  1. The cardholder taps the card to enter the transit system.
  2. The gate validates the card using offline data authentication (ODA), the card expiration date, and the deny list.
  3. When the card is valid, the gate allows the passenger to enter the transit system.
  4. When the ODA fails, the card is added to the deny list, and the debt recovery process begins. See Debt Recovery Workflows.
  5. You send an authorization request for a nominal amount.
  6. When the authorization is successful, you calculate the fare for the travel period.
  7. You submit a purchase request via
    Cybersource
    .
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