hi guys, I have to develop a prototype for a device to perform a 'brute-force' attack upon a keypad entry system.The device may assume a keypad of 3 columns and 4 rows. It may also assume a pass-code of 4-6 key-presses. The device will be required to press the keys and record (sound) the result - to differentiate valid guesses from invalid. The device may sequentially try various keystrokes in order to determine the correct 'combination'. It is this guessing (trial-and-error) which makes it a 'brute force' technique. We are told that we can buy a lock with 9 keys-keypad on it and then use a solenoid to press and try different combinations. Can anyone help us with what the block diagram will be and how the circuit will be? We are told to use a pic controller for this project. We can offer rewards as well.