Which security feature was first introduced in US passports in 2007 as part of enhanced anti-counterfeiting measures?

Government documents require sophisticated security features to prevent counterfeiting and tampering. From passports to social security cards, these secure packaging innovations protect citizens' identities and sensitive information. Test your knowledge about the advanced security measures implemented in government-issued identification and documentation over the years.

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RFID microchip embedded in the cover
Holographic state seals that change color when tilted
Quantum dot verification patterns
Biometric fingerprint data embedded in the barcode