Tamper detection using bulk multiple scattering
First Claim
1. A system for protecting an object comprising:
- A. means for emitting coherent radiation;
B. means for detecting said coherent radiation;
wherein said object, emitting means and detecting means are encapsulated and further including means for scattering said coherent radiation.
1 Assignment
0 Petitions
Accused Products
Abstract
The multiple scattering of coherent radiation in an inhomogeneous medium is used to detect attempted intrusions into a protected area or into a tamper-proof package for such purposes as preventing the unauthorized detection and copying of electronic information used for authentication and coding in electronic commerce, communications, command, and control systems. A key advantage is that any intrusion into the sensed volume will produce a detected change in the measured intensity which will be equal to the full amplitude range if the intrusion is into a cylinder with radius comparable to the wavelength of the sensing radiation. The response of the medium can also be used to provide a unique identity key.
-
Citations
14 Claims
-
1. A system for protecting an object comprising:
-
A. means for emitting coherent radiation; B. means for detecting said coherent radiation; wherein said object, emitting means and detecting means are encapsulated and further including means for scattering said coherent radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
Specification