Arcade machines have evolved significantly to support competitive play, requiring robust player authentication systems to ensure fairness and security. Here’s how they handle it:

1. Card-Based Systems: Many modern arcades use RFID or magnetic cards linked to player profiles. Swiping or tapping a card logs the player in, tracking scores and progress.

2. PIN Codes: Some machines require players to enter unique PINs, tying gameplay to registered accounts for leaderboard integrity.

3. Biometric Verification: High-stakes arcades employ fingerprint or facial recognition to prevent cheating and account sharing.

4. Online Accounts: Networked arcades sync with cloud-based profiles, allowing players to log in via QR codes or usernames for cross-machine progress.

5. Local Tournaments: For competitive events, organizers often issue temporary credentials or hardware tokens to verify participants.

These methods ensure fair play, prevent fraud, and enhance the competitive arcade experience. As technology advances, expect even more secure and seamless authentication solutions.