The ability can make people believe in what one says, no matter what. The other people's own personal views and beliefs, no matter how strong, do not protect against the ability. However, the ability does not work if the person the ability is used on cannot hear the words, or one is prevented from speaking orally. In World 8, it has been shown that the ability is blocked by a diamond aura, displaying that belief induction must work on a mental level. In World 2, the ability has been shown to break the effects of corruption with enough repetition, and it should also work similarly against the effects of persuasion too. In Hisoka-Nao's case, when he uses the ability will be the only time his advanced lie detection enables him to lie himself.