Every country has an international calling code.
These boxes represent cards. The bottom set is the code and the top set is the key. Each suit represents a button.
Get this one wrong and the numbers will change, but the pattern stays the same. Look only in the first column to find out what the pattern is. The first number is changed using the second and third numbers to get the fourth number.
There are 4 groups of buttons in this puzzle. The top of each is the problem, and the bottom is the solution. This puzzle uses the same concept as the Time puzzle (File 9) in a slightly different way.
That completes the Hints for Hack This Game 2! Congratulations to everyone who made the top hackers list (we are still accepting gamertags).