The owner of the note can recognize the image and voice of the original owner, i.e a god of death.This note shall become the property of the human world, once it touches the ground of (arrives in) the human world.
These rules were also used in the Manga at the end of each chapter, as well as dividers in the anime used for bringing the show to commercial and when it returned from commercial. These rules are ones that are implied or otherwise stated in the series, but that are not written within the pages of the Death Note. After writing the cause of death, the details of the death should be written in the next 6 minutes and 40 seconds (400 seconds).If the cause of death is not specified, the subject will simply die of a heart attack.If the cause of death is written within 40 seconds of writing the subject's name, it will happen.Therefore, people sharing the same name will not be affected. This note will not take effect unless the writer has the subject's face in their mind when writing his/her name.The human whose name is written in this note shall die.These rules are the ones that are directly stated in the front of the Death Note. When someone is killed by the Death Note, the rest of their life is transferred to the Shinigami, and, by killing enough people, Shinigami could potentially become immortal. The Death Note is on of the most powerful objects in the universe, used by the Shinigami to take the lives of those who they wish.