Use Magic Device (Cha)
You can use this skill to read a spell or to activate a magic item. Use Magic Device lets you use a magic item as if you had the spell ability or class features of another class, as if you were a different race, or as if you were of a different alignment.
Actually the skill use magic device is in the game and allows rogues to use magic devices, but in what really shines this skill is in allowing rogues using items magically barred from them, for example, allowing wearing a bracelet that can be weared only by wizards or wielding a katana that can be used only for LG characters.