Marker-Based AR (Recognition-Based)
This is one of the earliest and most common forms of AR. It uses a specific visual object—a "marker"—such as a QR code, a printed image, or a custom symbol, to trigger the digital overlay. The device's camera scans the marker, recognizes it, and then superimposes a pre-programmed 3D model, animation, or video onto it
Markerless AR (Location-Based or Position-Based)
This form doesn't require a physical marker. Instead, it uses a device's GPS, digital compass, accelerometer, and other sensors to place digital content in a specific real-world location. The most famous examples are mobile games like Pokémon GO.
Web based AR
This is a rapidly growing area that allows users to experience AR directly through a web browser on their smartphone without needing to download a dedicated app. By simply visiting a website and granting camera permissions, users can access marker-based or markerless AR experiences. This significantly lowers the barrier to entry for widespread consumer use in marketing and advertising