The dexterous manipulation of small objects for the purpose of misdirection or concealment is not looked upon favorably by most honorable samurai. The code of Bushido flatly calls for sincerity in action, word, and thought, and such parlor tricks smack of deception and dishonesty, which no honorable samurai can abide.
The Conceal Emphasis allows you to hide small objects (something that can fit in your hand) on your person, requiring a Contested Roll using Sleight of Hand / Agility against Investigation / Perception to detect it. The Escape Emphasis allows you to slip free of bonds. The TN for this varies considerably, and can be TN 15 for simple ropes or as high as TN 25 or 30 for high-grade chains or bindings, or it can be a Contested Roll against the responsible party's Sailing (Knot-work). Pick Pockets is fairly self explanatory, requiring the same manner of Contested Roll as Conceal in order to avoid detection, and Prestidigitation allows you to use the Skill to entertain or distract people by performing tricks.