Patent ID: 11948479
Assignee: NEC CORPORATION OF AMERICA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method of detecting tampering, comprising:
in a sealing process:
analyzing a seal applied to seal an object as a tamper evident element,
recording at least one manufacturing defect of the seal identified based on the analysis, the at least one manufacturing defect comprising at least one non-reproducible deviation from seal generation instructions used to produce the seal, and
generating a signature comprising the at least one manufacturing defect; and

in a seal verification process:
obtaining the signature,
analyzing the seal sealing the object, and
determining whether the object is tampered based on a comparison between the analyzed seal and the signature;
wherein the at least one manufacturing defect is not encompassed by any feature defined for the seal by the seal generation instructions.