Which innovative POS feature has specifically revolutionized food allergen management in restaurants?

Modern restaurants are increasingly adopting sophisticated point of sale (POS) systems that go far beyond simple payment processing. These advanced systems are transforming how food establishments operate, collect data, and serve customers. From inventory management to customer relationship tools, today's POS technology has become the central nervous system of successful food businesses. Test your knowledge about this crucial restaurant technology!

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Automated allergen flagging systems that instantly alert kitchen staff about customer dietary restrictions
Biometric payment verification requiring fingerprint confirmation
AI-driven inventory prediction tools that forecast ingredient usage
Cryptocurrency payment options for international restaurant chains