Biometric authentication is increasingly being integrated into arcade game machines to enhance security, personalize user experiences, and streamline operations. The most common methods involve using unique physical or behavioral characteristics for identification. One prevalent approach is fingerprint scanning, where players register their fingerprints to access personalized game profiles, save progress, or make payments securely. This technology is reliable and widely adopted due to its accuracy and ease of use. Another method is facial recognition, which uses cameras to identify players based on facial features. This allows for seamless login, age verification for restricted games, and tailored in-game content. Some advanced systems combine this with emotion detection to adjust game difficulty dynamically. Iris or retina scanning offers a high-security option, though it is less common in arcades due to cost. It involves capturing the unique patterns in a player's eye, providing a secure way for identity verification in premium or competitive gaming environments. Voice recognition is also emerging, where players use vocal commands or their voiceprint for authentication, adding a layer of convenience and accessibility. Additionally, biometric payment systems are gaining traction, linking fingerprint or facial data to payment accounts for quick, cashless transactions. These integrations not only improve security by reducing fraud and unauthorized access but also enhance the gaming experience by offering personalized settings and faster access. As technology evolves, we can expect more innovative biometric applications in arcades, making gaming safer and more immersive.