Doqumint technology: counterfeit resistant documentation

Patent metadata

Field	Value
Publication number	US-11548309-B2
Application number	US-202117372482-A
Country	US
Kind code	B2
Filing date	Jul 11, 2021
Priority date	Jun 29, 2020
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

Manufacturing a counterfeit resistant document as a randomized assembly of material constituents with a large variety of electrical conductivity attributes, thereby achieving a unique set of physically measured properties of the document, so that a document verifier will be convinced of the authenticity of the document by comparing the results of real time measurements with measurements pre-recorded in a public ledger.

First claim

What is claimed is:

1. A system comprising:
a document, wherein the document has a physical rectangular entity having specified thickness, length, and width, imprinted with distinguishing humanly readable markings;
the document is being constructed as t flat, dove-tailed sections, where each section is one of n possible polymers of similar properties, except that each of those n polymers is doped with different measure of a conductive metal element and as a result each polymer i, for i=1,2, . . . n has a unique conductivity Ci;
the t sections have arbitrary shapes and arbitrary sizes, wherein the t sections are attached to each other without open space therebetween,
the shapes and the sizes of the t sections is determined by a computing device guided by random data as input;
the face of the document is marked in m specified locations by electrical ports;
the document is being placed on a document reader-recorder, wherein the document reader-recorder measure electrical conductivity and perform related computation;
the document reader-recorder is connected to the m ports;
the document reader-recorder measures electrical resistance, R(p,q) between arbitrary p⊂m ports that are being connected to the positive terminal of a battery placed inside the document reader-recorder, and different arbitrary q≤m−p ports that are being connected to the negative terminal of the battery; and since the shapes and sizes of the t sections is randomized, so is the value of R(p,q);
the measurement of R(p,q) is repeated r times, each time with a distinct selection of the p ports and the q ports, so that no two measurements are conducted over the same set of p ports and q ports;
the r measurements are being listed on a public ledger L;
thereby the document is readied for distribution;
the document is sent to a destination where the system performs an identity verification action to verify that the document at hand is the document identified in the public ledger, L;
the verification process is carried out by placing the document on a reader-verifier, which is built as a part of the document reader-recorder, with an addition of a verification element, V;
the reader-verifier is taking arbitrary v r measurements R(p,q);
the V part of the reader-verifier is then comparing the v measurements with the corresponding values listed in the public ledger L;
if the comparison is in the affirmative, then the reader-verifier is issuing a trust statement: expressing trust that the measured document is the one identified in the public ledger.

2. The system in claim 1 wherein the document is prepared by painting one surface of the document with a paint comprising n paint variants P1, P2, Pn where each paint variant has a different electric conductivity C: C i ≠C j , for i,j=1,2, . . . n for all i≠j, and where the painted surface is comprised of s=t sections which are bounded areas, called stains, and where the stains cover the entire painted surface, and where each stain is of an arbitrary shape, and of an arbitrary size, and each stain comprising one of the n paint variants, randomly selected;
the m ports are marked on the painted surface,
and where a measurement x of the painted document is being executed by the reader-verifier as follows:
(i) arbitrarily specifying p<m ports on the painted surface, this group is called the positive group,
(ii) arbitrarily specifying q≤m−p different ports on the painted surface, this group is called the negative group,
(iii) connecting the positive group to the positive terminal of the battery, and
(iv) connecting the negative group to the negative terminal of the battery, thereby
(v) measuring the effective electrical resistance R=R(x)=R(p,q) between the two groups, (conductivity test);
repeating the process (i)-(v) v times, without repeating the exact selection of the positive group and the negative group, and thereby listing v measurements of the painted document, each measurement is expressed in a numeric reading;
this sequence of actions is executed by the reader-recorder and by the reader-verifier.

3. The system in claim 2 where a second painted layer prepared as the first layer, is applied on top of the first layer, a third layer, also prepared as the first layer, is applied on top of the second layer, and so on for t layers, painted one on top of the other, the m ports are marked only on the upmost surface.

4. The system in claim 2 wherein an electronic chip is placed under the painted layer, the chip containing non-rewriteable data, and where the terminals of the chip are accessible via holes drilled in the painted surface, and where if the document is authenticated then the data drawn from the chip through its exposed terminals is also authenticated.

5. The system in claim 4 where the chip in the document contains biometric data of a given (tested) individual, and where an identity verification station is used to verify and authenticate the individual carrying the document the identity-verification station comprising (i) the, reader-verifier, (ii) a chip reader, and (iii) a biometric reader;
the system is reading biometric data from the tested individual claiming to be the individual identified in the document, and where upon authentication of the document, and agreement between the biometric data read from the chip and the biometric data collected from the tested individual, the identity verification station concludes that the tested individual is the individual identified in the document, while in case of disagreement between the data on the chip and the data measured from the tested individual the identity verification station concludes that the tested individual is not the individual identified in the document.

6. The system in claim 2 where the paint variants are metals of different degrees of conductivity.

7. The system in claim 1 where the painted randomized conductivity surface is painted on the front side of the document, and is transparent so that the contents of the document is seen through the painted layer.

8. The system in claim 7 where a second painted layer is applied to the back side of the document, and where each painted surface has its own set of numerically expressed properties.

9. The system in claim 8 where the two surfaces are connected via small holes in the painted surfaces and conductivity tests are conducted between arbitrary p′ ports selected from the 2m ports from both surfaces, and between arbitrarily selected q′ ports from the 2m ports from both surfaces, such that p′+q′≤2m and where the p′ ports are all connected to the “plus” terminal of the battery, and the q′ ports are connected to the “minus” terminal of the battery.

10. The system in claim 7 where the document contains writings declaring the document to be of a specific monetary value, and where upon authenticating the document, it is trusted for the amount of money written on it.

Assignees

• Samid Gideon

Inventors

• Samid Gideon

Classifications

• B42D25/20 Primary

  characterised by a particular use or purpose · CPC title

• G07D7/023

  Measuring conductivity by direct contact · CPC title

• G06K19/067 Primary

  Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards {also with resonating or responding marks without active components} · CPC title

• G06K7/10237

  the reader and the record carrier being capable of selectively switching between reader and record carrier appearance, e.g. in near field communication [NFC] devices where the NFC device may function as an RFID reader or as an RFID tag · CPC title

• G07D7/02

  Testing electrical properties of the materials thereof (G07D7/01 takes precedence) · CPC title