Virtual, augmented, mixed reality: what’s the difference?

Virtual reality (VR): closing the door behind you

The headset replaces your surroundings entirely with a digital world. Two screens in front of your eyes, sound in your ears, sensors tracking every turn of your head: look around, and the scenery looks around with you. Your brain, ever the easy audience, ends up believing it.

It’s the natural home of video games, but not only that. Pilots, surgeons and firefighters use it to practice the kind of moves best botched in a simulation rather than in real life. It’s also used to tour an apartment that hasn’t been built yet, or a museum on the other side of the planet.

The downside is right there in the definition: you’re cut off from the real world. The real world, meanwhile, hasn’t moved, and neither has the coffee table. Some users also get a form of motion sickness, when the eyes report movement the body can’t confirm.

Augmented reality (AR): the real world, with subtitles

Here, you never leave the room. Digital elements are layered over what you already see, on a phone screen or in the lenses of a pair of glasses. The real world stays center stage; the digital merely annotates it.

You’ve almost certainly used it without realizing. Filters that give you dog ears, Pokémon GO and its creatures on the sidewalk, the app that drops a virtual sofa into your living room before you buy: all AR. So is the navigation arrow projected onto some car windshields.

Its limit: in its simplest form, the image sits on top of reality without really knowing it. A notification in the corner of a lens is still a notification, whether you’re in your kitchen or on a train platform.

Mixed reality (MR): the virtual learns some manners

Mixed reality takes the AR principle and adds an understanding of space. The device maps the room continuously: it knows where the walls, the floor and the table are, and how far away. Virtual objects can then behave as if they were really there.

In practice, a virtual ball bounces off your actual hardwood floor. A giant screen stays pinned to the wall when you leave, and is waiting when you come back. A character walking behind the sofa is partly hidden, just as a flesh-and-blood guest would be. And you often handle it all with your bare hands, no controller needed.

Most current headsets pull this off with “passthrough”: cameras film the room and replay it inside the headset, virtual objects included. That’s how recent Meta Quest headsets, the Apple Vision Pro and the Samsung Galaxy XR work.

The uses follow: a three-monitor desk without buying a single monitor, a repair guided step by step, games that turn the living room into a game board. This time, the coffee table is part of the set.

And where does XR fit in ?

A fourth acronym is doing the rounds: XR, for “extended reality.” Don’t panic: it isn’t yet another technology, just an umbrella term covering the other three. Handy when you don’t want to choose, which is happening more and more often.

Because the lines are blurring. A single headset can shut you inside a virtual world, then bring your living room back with one gesture. With glasses, the vocabulary is more generous than the technology: many “smart” models amount to a camera, speakers and a voice assistant, sometimes a small display in the lens. Useful, but still a long way from the hologram science fiction promised.

Manufacturers add a layer of their own: Apple talks about “spatial computing,” while others label as “mixed reality” what their competitors would call AR. The safest approach is still to look at what the device does, not at what’s printed on the box.

In short

Criterion	Virtual reality (VR)	Augmented reality (AR)	Mixed reality (MR)
What you see	A 100% digital world	The real world, with elements added	The real and the virtual interwoven
The real world	Hidden	Center stage	Integrated and mapped
The virtual reacts to the room	No	Little or not at all	Yes
Typical hardware	Closed headset	Phone, glasses	Camera-equipped headset, advanced glasses
Common uses	Gaming, simulation, training	Filters, navigation, furniture previews	Virtual screens, maintenance, living-room games

The one-line version: VR takes you somewhere else, AR annotates where you already are, MR moves the virtual into your home. All that’s left is deciding whether you want it moving in.