When the right key lifts all the pins to the proper height then the plug can rotate and the lock can be opened.
Then we need something to simulate a key, you can try with a paper clip to pull the pins while you are rotating the plug, but it will be very difficult. There are tools to make it very easier "lock pick sets" and there are also lock pick guns. We are going to build something like an hybrid device.
I know it's rare to open a mechanical lock by the use of a hard disk and a mouse, but we thought it was possible and we demonstrate it! Imagination is the true key :-]
The main things we need, are: AT power supply, a hard disk 7200rpm, a mouse, some screwdrivers. Optional: network card, floppy disk.
Start by opening the hard disk, did you noticed that you are breaking the warranty void? Of course you are!
The hard disk is opened, we will remove almost all parts inside it.
Remove also the powerful magnets, it could be very useful for future projects.
Remove the plates and the head. We want to produce vibration when the hard disk is spinning.
Vibration is successfully created by screwing a heavy metal part to the main motor axis. Then when the motor spin, it's weight is not aligned and produces vibration.
In this picture the HD is connected to the power supply and the motor is spinning.