The new lock picking is one new feature in T3 that I simply adore. When you frob a locked object to which you do not have a key, the game moves you into position, you switch to 1st person mode (if you were not there already) and Garrett's hands go to work. In your lower right display, you get a series of concentric circles, and a pick. Somewhere on each circle is a "sweet spot" (their words, not mine) which you have to find by moving your pick over it. You know you found it when the ring wiggles and makes noise. At this point there's still some margin for error as to where the so-called sweet spot is, so you can either keep wiggling your pick until it opens by itself, or start left-clicking until you find the spot yourself. Many locks use the same picking pattern, so it's very possible to memorize the patterns and pick locks in scant seconds, regardless of their original complexity. Locks grouped by picking patterns are also grouped by appearance, so it's possible to know how to pick a lock the instant you set your eyes on its shape, color, and so on.