The Gospel according to John (chapter 19, vers 20) tells that the inscription Jesus of Nazareth, King of the Jews was written in Aramaic, Latin and Greek. Because of shortage of space this was abridged to INRI. Now, by using an LCD display and a ticker, the whole text can also be shown.
Additionally the actual stock exchange prices of the shares, the Vatican owns, are shown in another ticker below the INRI inscription. That way people are also informed about the actual secular influence of the Roman Catholic Church. Therefore the cross is connected to the internet via a LAN cabel.