A method for warning a user of a distance between eyes of the user and a display

Embodiments of the present invention, a method for alerting a user of a distance between the eyes of the user and a screen provide. The method comprises: capturing an image containing the two eyes of the user; Determining the number of pixels between the two eyes of the user from the image; Comparing the number of pixels between the two eyes of the user with a predetermined value; and alerting the user if the number of pixels between the two eyes of the user is greater than the predetermined value.