Soft Skin‐Attachable Haptic Interfaces for User‐Friendly Immersive Metaverse

ABSTRACT The rapid advancement in immersive metaverse technologies has accelerated the development of advanced haptic interface technologies designed to overcome the physical limitations of real‐world interactions. However, delivering high‐resolution tactile stimuli, such as vibrations, to mechanoreceptors and afferent nerves embedded deep within the multilayered skin remains a major challenge. The intrinsic skin barrier, mechanical mismatches between actuators and tissues, irregular skin contact, and limited stretchability continue to restrict stable and precise tactile perception. Recent progress has emphasized structural strategies tailored to specific body regions and the use of materials with skin‐like elasticity, which enhances conformability and enables more effective stimulation of subcutaneous sensory receptors. These advances highlight the potential of material and structural innovations for realizing more realistic tactile experiences. In this review, we provide a comprehensive overview of the historical evolution of haptic interfaces, systematically summarize the functional elements developed based on design and materials optimized for body‐specific requirements, and highlight representative case studies and integration strategies for skin‐attachable platforms. Finally, we discuss the technological pathways and persistent challenges that need to be addressed in realizing next‐generation haptic interfaces for a truly immersive metaverse.