Encrypted blob containing only the card number (PAN) when a new card is entered. Null for stored cards.
Identifier of the stored payment method when using a saved card. Null for newly entered cards.
Source / representation type:
STORED_PAYMENT_METHOD – user picked an existing saved card. id is set and encryptedCardNumber is null.ENCRYPTED_CARD_NUMBER – user entered a new card. encryptedCardNumber contains an encrypted payload and id is null.
Lightweight descriptor of the currently selected card number context.
Returned inside CardFormEmbedState.cardNumberInfo so the host can distinguish whether the user is paying with a previously stored payment method or with a newly entered (encrypted) card number, without exposing raw PAN data.