Criticism of The Da Vinci Code "Smithy Code Jackie Fisher who are you Dreadnought", referring to the British admiral whom Judge Smith admires. As with the book, this secret message made use of Fibonacci numbers for its encoding. Dan Brown has been sued twice in The United States by author Jack Dunn who claims Dan Brown copied his book The Vatican Boys (1997) to create The Da Vinci Code, Angels & Demons and Brown's now famous character Robert Langdon. Jack Dunn calls Dan Brown's actions, "The Largest Literary and Movie Crime in History." At a conference on April 28, 2006 Archbishop Angelo Amato, the secretary of
The Da Vinci Code WebQuests of the book's dustcover jacket, and to search the web to learn the answers to certain questions or clues. The second Da Vinci Code WebQuest, titled "Uncover The Code", followed a similar style. On April 17, 2006, Google launched its own "Da Vinci Code"-related quest, based around the release of "The Da Vinci Code's" film version. It was created in coordination with Sony Pictures, and was called the "Da Vinci Code" Google Quest, an online series of puzzles with a prize offered to those who answer all 24 puzzles correctly. Participants were required to sign up for a Google Account