March is the password for the computer safe at Wonderland Jail. There is a note left presumably by the Mad Hatter with seemingly nonsensical words in red listed. But in a newspaper article nearby, the Hatter's code is discussed, and it is revealed that secrets can be found in the second letter of each word, in this case, March. The Rabbit is to type "unlock march" into the computer in order to unlock the safe and get the evidence.