These fields can appear in the
pos object of a transaction.
- card_presence: If true, indicates a card (physical or virtual) was presented at transaction time.
- card_holder_presence : If true, indicates the card holder was present at transaction time.
In general, these values are true when the transaction occurs at a physical merchant and false when the transaction occurs online. In some cases, such as when a card is held on file, card_holder_presence is true and card_presence is false.