The unique feature that distinguishes augmented reality (AR) from virtual reality (VR) is that AR overlays digital content onto the real world, while VR creates a completely immersive digital environment. AR enhances the user's perception of reality by adding virtual elements, such as graphics or information, visible through devices like smartphones or smart glasses. In contrast, VR immerses users in a simulated environment, isolating them from the real world, which is primarily used for gaming and simulations.