On the Subject of Jailbreaks

What the hell do any of these words mean? Someone knows how to make a secure password...

• Press any lettered key to start a ninety second countdown. Within this time you must decrypt the password.
• You must type in a four letter word in order to guess correctly. Do not attempt to query a password that is not four letters.
• If the password you queried has a similar letter in a similar position as the true password then it will display that letter in its correct position. Any query that is not a word will not result in any letters being shown even if it shares the same letters in the same positions.
• Type in the correct password to disarm the module.