128.1. A card will always exist in one of the many Zones described during Setup.
128.2. A card will have a different level of Privacy based on where it resides at a given time
128.3. Secret: This level of Privacy indicates that no player may read or look at the face of the card.
128.4. Private: This level of Privacy indicates that only the controller of a card on the board or the owner of a card in any other zone may read or look at the face of the card. Example: Cards in a player's hand are owned by that player. Only that player may read or look at their faces. Example: If a player controls a facedown card at a battlefield, that player and only that player may read or look at that card's face, regardless of who owns that card.
128.5. Public: This level of Privacy indicates that any player may read or look at the face of the card.