How to open locks in Thief 3

[blackpearl]

I have a silly question. How do I open locks in Thief 3: deadly shadows. I'm stuck at the training itself

They say I have to find the "sweet spot" where the lock makes the maximum movement and remain there to open locks. But I'm unable to do it. How to do it? Any tricks?

[Third Eye]

Lock Picks: Use the action button on a locked door, and start a lockpicking sub-game. The objective is to find the sweet spot in the lock, and pick each row, one-by-one. By moving your pick with your mouse, you're able to probe the row you need to solve in search of the sweet spot. You'll know when you have almost found it, as you'll hear a rapid, metallic clicking, and Garrett will move his arm up. You can also use WASD (Or whatever bindings you've set for "Move Forward, Move Backward, Strafe Left, Strafe Right) to control the pick, and doing this while rapidly clicking the mouse button will give you the ability to solve a lock in 5 seconds, while using the mouse it would have taken 15.


http://en.wikipedia.org/wiki/Thief:_Deadly_Shadows

[entrana]

it took me 5 minutes with the mouse

^^ 5 minutes with the mouse being a theif u must open that in 30-40 secs.

[blackpearl]

Finally opened the lock with keyboard. Its impossible to do it with the mouse.