Types of AR: A Guide to Augmented Reality Categories

1What Is Augmented Reality?

Augmented reality (AR) overlays computer-generated content — images, text, or 3D models — onto a live view of the real world, usually through a smartphone camera, tablet, or headset. Unlike virtual reality, AR keeps the real environment visible and adds to it rather than replacing it.

Different AR systems achieve this overlay in different ways, which is why AR is typically grouped into several distinct types based on the underlying technique.

2Marker-Based AR

Marker-based AR uses a specific visual trigger — such as a QR code, image, or printed pattern — that a camera recognizes before displaying associated digital content. The marker tells the system exactly where and how to place the overlay.

This type is common in print media, packaging, and educational materials, where a printed marker can reliably trigger a consistent piece of digital content.

3Markerless AR

Markerless AR, also called location-based or position-based AR, uses a device's camera, GPS, and motion sensors to understand and place digital content within an environment without needing a predefined visual trigger.

This is the type behind most modern mobile AR apps, including furniture-placement apps and navigation overlays, since it can adapt to any physical space rather than requiring a specific printed marker.

4Projection-Based AR

Projection-based AR projects light directly onto physical surfaces to create the illusion of digital content existing in the real world, without requiring the viewer to look through a screen or headset.

It's often used in interactive displays, manufacturing guidance systems, and installations where multiple people need to see the same augmented content simultaneously without individual devices.

5Superimposition AR

Superimposition AR replaces the original view of an object, either partially or fully, with an augmented version — for example, showing how a piece of furniture would look in a different color, or visualizing an X-ray overlay on a patient's body.

This type is common in retail visualization and medical training applications, where comparing an augmented version directly against the real object adds practical value.

6Choosing the Right AR Type

The right AR type depends heavily on the specific use case's requirements.

• Use marker-based AR when consistent, repeatable triggers (like printed materials) are already part of the workflow.
• Use markerless AR for mobile apps that need to work in arbitrary, unpredictable environments.
• Use projection-based AR for shared, multi-viewer physical spaces like showrooms or factory floors.
• Use superimposition AR when directly comparing an augmented version against the real object adds clear value.

7Wrap-Up: Understanding AR's Building Blocks

Augmented reality isn't a single technology — it's a set of distinct techniques, each suited to different environments and goals. Understanding these categories makes it easier to evaluate which AR approach fits a specific product or use case.

As AR hardware and sensors continue to improve, expect markerless and projection-based approaches in particular to keep expanding into new everyday applications.