Optically variable ink
Instant detection, no special device needed. With the change of the human eye’s perspective under white light or side view, two different colors are presented. Popularly used on banknotes.
Overt
Covert
Material
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Egg shell
- Tamper-proof
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Hologram tamper-proof
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Hologram register hot stamping
- Special paper
- Special ink
Serialization
- Barcodes and QR codes
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Random color changing codes
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Laser engraved serial code
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Invisible barcode
- Colored code
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Invisible QR code
System
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Trace and Trace System
- Membership Management System
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Distribution Management System
- Production Record System
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Authenticity verification
Post printing
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