 The zone starts with the letters IP (designated by ICAO for passport card), followed by the issuing country code USA and then the passport card's serial number (which is prefixed with a "C" and differs from the individual's passport book number, even if issued together).The general layout of the passport card is virtually identical to the layout of the Border Crossing Card issued to Mexican citizens with primarily the background imagery and entitlements varying between the two cards.In addition to the embedded RFID chip, the front of the card features a complex multi-layer hologram consisting of an American bald eagle surrounded by the words "United States of America Department of State" in a small clearly readable font, further surrounded by the same words repeatedly in microprint.