With the iteration and advancement of underlying technologies such as 5G, artificial intelligence, and blockchain, virtual reality (VR) technology is steadily maturing and integrating into a wide range of industries, including party-building training, landscaping, social gaming, and more. In the future, VR devices may become essential tools in people's daily lives, work environments, and educational contexts. Among these consumer electronic products, identity authentication plays a pivotal role. Secure and efficient identity authentication mechanisms can safeguard consumers' personal information and digital assets while enhancing the overall human-machine interaction experience. However, current user authentication methods for VR products are often cumbersome, posing significant usability challenges.This paper introduces, the application of iris recognition technology to standalone VR devices, aiming to achieve secure and convenient identity authentication. The discussion begins by evaluating the advantages and limitations of existing authentication methods, such as fingerprint recognition, facial recognition, voice recognition, and iris recognition. It further analyzes the feasibility of incorporating iris recognition technology into standalone VR devices for identity authentication. Subsequently, the paper elaborates on the hardware requirements and implementation strategies for integrating iris recognition functionality into standalone VR devices. Lastly, it addresses the technical challenges associated with this implementation and outlines the future developmental directions for applying iris recognition technology in identity authentication for standalone VR devices.