Which biometric authentication method was first widely adopted in mobile payment systems that significantly increased consumer trust in m-commerce transactions?

Mobile commerce has transformed how we shop, but security remains a critical concern. Payment authentication methods have evolved significantly over the years to protect consumer data while maintaining convenience. This poll tests your knowledge about a key security innovation that changed mobile payment adoption patterns globally. Understanding these security milestones helps explain consumer trust factors in m-commerce adoption.

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Fingerprint scanning
Facial recognition
Voice authentication
Iris scanning