Information system and method for providing information using a holographic element

Device for determining the location and / or orientation of an eye (680) with a system of detector (651) for recording a light beam irradiated by a part of the eye, a projection system that projects information perceptible image on an eye of a user, with an irradiator (653) for emitting light and a provision conductive projection light for deflection and / or focusing of the light rays emitted, comprising one or more elements (623) holographic; and a camera which is designed for taking an image of the environment, the device portably being configured, the image taken by the camera is processed so that meaningful patterns of the environment are identified, changes in orientation of the device are established respect to the environment by the image taken by the camera, and the orientation of the eye is established with respect to the environment by the light beam recorded and the image taken by the camera, comparing the image taken by the camera with an image of reflected environment the retina or cornea of ​​the eye.