ICCID (Integrated Circuit Card Identifier) is a 20 digit number on the SIM card.
Every SIM card, regardless of cellular carrier, has the ICCID printed on the card body in the area marked on the example SIM card below, as well as on the SIM itself. During the activation process, you will need the ICCID number from that SIM card.
Ghost models ship with the SIM already installed, but the SIM is on the SIM carrier card and on a sticker inside the camera.