Which cybersecurity innovation was first widely adopted by major gaming platforms to protect in-game purchases and virtual item transactions?

The gaming industry faces unique cybersecurity challenges with millions of users' personal and payment data at stake. As virtual worlds expand and in-game purchases become more common, gaming platforms have pioneered innovative security measures. This poll tests your knowledge about cutting-edge security implementations that have changed how the gaming industry protects its digital point-of-sale systems and user data while maintaining seamless gameplay experiences.

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Two-factor authentication using gaming peripherals (controllers/headsets)
Behavioral biometrics that analyze player patterns to detect account takeovers
Blockchain verification for all microtransactions
Neural network encryption that changes keys based on gameplay events