4. Cryptography
  5. By modifying optical image

Chih S. Chan

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Automated verification and prevention of spoofing for biometric

Image analysis – Applications – Personnel identification
Patent

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Plurality-factor security system

Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Protection at a particular protocol layer
Patent

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Secure application of seals

Cryptography – By modifying optical image
Patent

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Profile ID: LFUS-PAI-P-191436

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