How to use it: XX
In order to see the names and life spans of humans by using the eye power of the god of death, the owner must look at more than half of that person's face. When looking from top to bottom, he must look at least from the head to the nose. If he looks at only the eyes and under, he will not be able to see the person's name and life span. Also, even though some parts of the face, for example the eyes, nose or mouth are hidden, if he can basically see the whole face, he will be able to see the person's name and life span. It is still not clear how much exposure is needed to tell that name and life span, and this needs to be verified.
If above conditions are met, names and life spans can be seen through photos and pictures, no matter how old they are. But this is sometimes influenced by the vividness and size. Also, names and lifespans cannot be seen by face drawings, however realistic they may be.