Which natural phenomenon inspired Amazon's palm-recognition payment technology 'Amazon One' that allows customers to pay by scanning their palm?

The natural world has inspired many technological innovations in retail. Biometric authentication, drawing from natural identification systems, has transformed how we interact with products and make purchases. This poll tests your knowledge about a groundbreaking biometric retail technology inspired by nature that's changing the shopping landscape and enhancing security while providing a frictionless experience.

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Unique tree ring patterns in redwood trees
Individual vein patterns in leaves
Distinctive human palm vein patterns
Fingerprint-like markings on butterfly wings