Augmented reality (AR) is a technology that enhances the real world by overlaying computer-generated digital content onto a user's view of their physical environment in real time. This digital content can include 3D graphics, images, sounds, and other sensory stimuli, which are integrated seamlessly with the real world to create an immersive experience

. Unlike virtual reality, which replaces the real world with a fully simulated environment, AR modifies or adds to the existing environment without removing it. Users typically experience AR through devices such as smartphones, tablets, smart glasses, or head-mounted displays that use cameras and sensors to capture the real world and then overlay digital information onto it

. The core process of AR involves:

• Sensing and tracking the user's environment using cameras, GPS, accelerometers, gyroscopes, and other sensors.
• Processing the sensor data to recognize objects or features in the environment.
• Rendering and displaying digital content aligned with the real-world view, so it appears naturally integrated

AR has diverse applications across industries including gaming, education, retail, manufacturing, healthcare, and marketing. For example, it can be used to visualize furniture in a room before purchase, enhance training by overlaying instructions on machinery, or create interactive entertainment experiences like Pokémon GO

. In summary, augmented reality enriches a user's perception of the real world by blending digital elements with physical surroundings, enhancing interaction and understanding without replacing reality itself