| 摘要 |
This invention proposes a per-piece unique optical randomness on security labels that enables a unique color profiling. Verification of Color-profiling is fully automated. Color profiling is captured under a light homogenizer. Color profiling starts at certain intersection point (within security label) of line joining reference circle to centre of security label. To detect duplication, multiple color-profiles are acquired with scanner flash light switched-on & switched-off. Even if same label is reapplied after tampering the asset the color profiling gets auto changed and can be automatically verified. Color profiling based security is layered on fundamental layer of spatial orientation. Also optically variable region can be leveraged to quickly verify if label is original without matching with stored color profile in cloud during registration scan. |
