This skill allows the user to take items from other players or NPCs. For this skill to work, the user must tap on a person's belt or knapsack. A little screen pops up with the words "Pickpocket" at the top. A list will then appear showing what items can be taken along with the percent chance of taking it. A "Take All" option sits at the bottom listing the overall percent of taking everything. A person would just press one of those buttons before the items are taken depending on the percentage. Most thieves have this skill.
At higher levels, thieves can even take small weapons and other items.