Augmented reality

**Augmented reality** (AR) is an interactive experience of a real-world environment where the objects that reside in the real world are enhanced by computer-generated perceptual information, across a ranges of senses that include visual, auditory, haptic, somatosensory and olfactory. AR incorporates a combination of real and virtual worlds, real-time interaction, and accurate 3D representation of virtual and real objects. This experience is an immersive aspect of reality, compared to VR which is cut off from reality.

Examples from Kaku's *Physics of the Future*:

* If you are driving a car in a foreign land, all the gauges would appear on your contact lens in English, so you would never have to glance down to see them. You will see the road signs along with explanations of any object nearby, such as tourist attractions. You will also see rapid translations of road signs.

* A hiker, camper, or outdoorsman will know not just his position in a foreign land but also the names of all the plants and animals, and will be able to see a map of the area and receive weather reports. He will also see trails and camping sites that may be hidden by brush and trees.

* Apartment hunters will be able to see what is available as you walk down the street or drive by in a car. Your lens will display the price, the amenities, etc., of any apartment or house that’s for sale.

* Gazing at the night sky, you will see the stars and all the constellations clearly delineated, as if you were watching a planetarium show, except that the stars you see are real. You will also see where galaxies, distant black holes, and other interesting astronomical sights are located and be able to download interesting lectures.

* If you are an actor, musician, or performer who has to memorize large amounts of material, you will see all the lines or music in your lens. You won’t need teleprompters, cue cards, sheet music, or notes to remind you. You will not need to memorize anything anymore.

* If you are a student and missed a lecture, you will be able to download lectures given by virtual professors on any subject and watch them. Via telepresence, an image of a real professor could appear in front of you and answer any questions you may have. You will also be able to see demonstrations of experiments, videos, etc., via your lens.

* If you are a soldier in the field, your goggles or headset may give you all the latest information, maps, enemy locations, direction of enemy fire, instructions from superiors, etc. In a firefight with the enemy, when bullets are whizzing by from all directions, you will be able to see through obstacles and hills and locate the enemy, since drones flying overhead can identify their positions.

* If you are a surgeon doing a delicate emergency operation, you will be able to see inside the patient (via portable MRI machines), through the body (via DNA sensors moving inside the body), as well as access all medical records and videos of previous operations.

* If you are playing a video game, you can immerse yourself in cyberspace in your contact lens. Although you are in an empty room, you can see all your friends in perfect 3D, experiencing some alien landscape as you prepare to do battle with imaginary aliens. It will be as if you are on the battlefield of an alien planet, with ray blasts going off all around you and your buddies.

* If you need to look up any athlete’s statistics or sports trivia, the information will spring instantly into your contact lens.