Below is the authentication flow for each payment method.

GCash

  1. The customer will be asked to log in to their GCash account using their mobile number.
  2. An OTP will be sent to the customer's mobile number.
  3. Once the OTP input is successful, the customer will be prompted to log in using their 4-digit MPIN.
  4. The customer will be prompted to review the transaction details before proceeding to payment.

GrabPay

  1. The customer will be asked to log in to their Grab account using their mobile number.
  2. An OTP will be sent to the customer's mobile number.
  3. Once the OTP input is successful, the customer will be prompted to review the transaction details before proceeding to payment.
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