 :the cheating section isn't accurate about the use of precision dice. The ambition is for fairer dice so in a way an anti cheating. But a prcision dice is one where all of the sides are smooth so that there are no indentations. This has two effects: 1) the dice roll more consistantly, 2) that it becomes more difficult to feel the spots of the dice. The latter is a method by cupping a finger around a die so that only one of the dice is being shaken and then rolling the dice.  :so no precision die by definition can be loaded, which would still be needed for a magnetic dice. But it could be a loaded dice. But loaded dice are of limited value and easily detected.  