Uh, yeah, what he said! ?(
Filching items from a backpack is actually a lot easier than you think, unless the backpack happens to be made of some seriously thick leather. A skilled thief could certainly slit the bottom of a commoner\'s pack, most likely unnoticed, due to the distance the pack is from the wearer\'s body. It\'s tougher to get something out someone\'s pockets because of the proximity of the item to the person\'s skin, which makes it easier to notice (feel) when someone\'s messing with your stuff.
(Uh, not that I know anything about this kinda stuff of course...

)
Personally, I sincerely hope thievery is kept to a minimum, or at least not made too powerful a skill in the game. Nothing is more frustrating to me than to lose the money/gems/trinkets/magicky-whatsits I\'ve been working so hard to get to some lowlife who exists only to screw with other players. Please, O Gods of PS, make it difficult to get away with when done to other players!