A couple days ago I posted an article about secret codes in the Arkham Knight villains trailer, and now those codes have been deciphered and the persons of interest page page on batmanarkhamknight.com (<-- linked there) has been unlocked! the images of where you can find the codes and what they mean will be posted below.
From experimentation, I've determined capitalization of the first letter of the phrase doesn't matter, but typing spaces does matter. Also make sure you put them in the order I listed them; yeah right, botanical gardens, Your greatest fears. Also, take my poll as to whether you think there should be an Arkham Knight page on persons of interest. Enjoy your unlocked content!