# US 2021/0279989 A1 · Identity document verification

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- Number: US 2021/0279989 A1
- Document ID: US20210279989A1
- Status: Published application
- Kind: A1
- Application number: 17/259,062
- Filed: 2019-04-08
- Published: 2021-09-09
- Earliest claimed: 2018-07-16
- Assignees: SITA Information Networking Computing UK Limited
- Applicants: SITA Information Networking Computing UK Limited
- Inventors: Kevin O'SULLIVAN
- Web page: https://patentgrep.com/patent/US20210279989A1

## CPC

- G07C 9/257: {electronically (G07C9/26 takes precedence)}
- G06N 20/00: Machine learning
- G06V 30/418: Document matching, e.g. of document images
- G07C 9/27: with central registration
- H04L 9/3231: {Biological data, e.g. fingerprint, voice or retina (network architectures or network communication protocols for supporting authentication of entities using biometrical features in a packet data network H04L63/0861)}
- H04L 9/3239: {involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD}
- H04L 9/3247: {involving digital signatures}
- H04L 9/50: {using hash chains, e.g. blockchains or hash trees}
- G07C: TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G06N: COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A method and system for identity document verification issues a decentralised identifier for a passenger which is then used by a passport issuing authority to digitally sign passport data including enhanced biometric data including an image of the bearer. A copy of the signed data is provided to the bearer. Prior to travel the bearer submits APIS data and their decentralised identifier to the authorities at the arrival destination. This data is verified in advance and the bearer issued with authority to use a pre-authorised section at immigration. On arrival an image of the bearer is acquired and matched with records of pre-approved traveler. If a match is made, the bearer is permitted to pass through automatic border control gates. The matching process may use machine learning to reduce the set of pre-approved passengers used in the match based on predicted time of arrival at immigration.

## Claims

### Claim at position 1

1-47. (canceled)

### Claim 48

A method of authorising a bearer of an identity document, comprising the steps of:
providing a decentralised identity for the bearer;
providing digitally signed biometric data relating to the identity document to the bearer, the biometric data being signed by a trust anchor and validated as being issued to the decentralised identity, the biometric data including an image of the bearer;
prior to the bearer travelling, providing the bearer's decentralised identity and biometric data including the image to an authority responsible for admission of the bearer for verification and, on verification, the bearer receiving an authorisation from the authority;
on arrival of the bearer, capturing an image of the bearer;
forming a reduced set of authorised bearers from the plurality of bearers authorised by the authority;
matching the image of the bearer with images of the reduced set of bearers authorised by the authority; and
on successful matching, granting admission to the bearer.

### Claim 49 (depends on 48)

The method according to claim 48, wherein the step of forming a reduced set of authorised bearers is based on predicted arrival time of each of the plurality of bearers at the point of image capture.

### Claim 50 (depends on 49)

The method according to claim 49, wherein the predicted arrival time of each bearer is calculated from at least one of the arrival time of the bearer at the destination, the walk time from the point of arrival to the point of image capture and the age profile of the bearer.

### Claim 51 (depends on 50)

The method according to claim 50, wherein the arrival time is the time of arrival of an airplane and the predicted arrival time is further calculated from the bearer's seat number on the airplane.

### Claim 52 (depends on 48)

The method according to claim 48, wherein the step of granting admission to the bearer comprises allowing the bearer to pass through an automated border control gate.

### Claim 53 (depends on 48)

The method according to claim 48, wherein the step of providing the bearer's decentralised identity and biometric data including the image to an authority responsible for admission of the bearer for verification, comprises providing the bearer's decentralised identity together with Advanced Passenger Information System (APIS) data.

### Claim 54 (depends on 48)

The method according to claim 48, wherein the step of providing the digitally signed biometric data comprises writing the bearer decentralised identity to the blockchain by the trust anchor.

### Claim 55 (depends on 54)

The method according to claim 54, wherein the step of providing the digitally signed biometric data comprises capturing the biometric data and other bearer document data, digitally signing the data using Self Sovereign Identity cryptology and issuing a copy of the digitally signed data to the bearer based on the bearer's decentralised identity.

### Claim 56 (depends on 55)

The method according to claim 55, wherein the copy of the digitally signed data is sent to the bearer's smart device and/or stored at a cloud agent.

### Claim 57 (depends on 56)

The method according to claim 56, wherein the step of capturing enhanced biometric data comprises the bearer providing their decentralised identifier to a kiosk, the kiosk obtaining verification of the decentralised identifier from a location specified in the decentralised identifier, the verification including identity document data including the bearer's image.

### Claim 58 (depends on 57)

The method according to claim 57, wherein the step of capturing enhanced biometric data further comprises the kiosk validating the data received from the specified location as being issued to the bearer's decentralised identifier and not tampered with.

### Claim 59 (depends on 58)

The method according to claim 58, further comprising the kiosk validating the bearer by obtaining an image of the bearer and matching the image with the image of the bearer in the verified identity document data.

### Claim 60 (depends on 59)

The method according to claim 59, wherein the step of capturing enhanced biometric data comprises capturing and digitally signing one or more of multiple images of the bearer, a 3-D image of the bearer, an infrared image of the bearer and an iris scan of the bearer, and issuing the enhanced biometric data as a biometric claim.

### Claim 61

A system authorising a bearer of an identity document, comprising:
an identity provider for providing a decentralised identity for the bearer;
means for providing digitally signed biometric data relating to the identity document to the bearer, the biometric data being signed by a trust anchor and validated as being issued to the decentralised identity, the biometric data including an image of the bearer;
means for providing, prior to the bearer travelling, the bearer's decentralised identity and biometric data including the image to an authority responsible for admission of the bearer for verification and, on verification, the bearer receiving an authorisation from the authority;
an image capture system for capturing an image of the bearer on arrival of the bearer;
an image matching system for matching the image of the bearer with images of a plurality of bearers authorised by the authority, the image matching system configured to form a reduced set of authorised bearers from the plurality of bearers authorised by the authority and to match the image of the bearer with images of the reduced set of authorised bearers; and
a control gate for granting admission to the bearer on successful matching.

### Claim 62 (depends on 61)

The system according to claim 61, wherein the image matching system is configured to form a reduced set of authorised bearers based on predicted arrival time of each of the plurality of bearers at the point of image capture.

### Claim 63 (depends on 62)

The system according to claim 62, wherein image matching system is configured to calculate the predicted arrival time of each bearer from at least one of the arrival time of the bearer at the destination, the walk time from the point of arrival to the point of image capture and the age profile of the bearer.

### Claim 64 (depends on 61)

The system according to claim 61, wherein the image matching system comprises a machine learning engine to form the reduced set of bearers and the machine learning engine is configured to continuously predict when individual bearers will arrive at the point of image capture.

### Claim 65

A method of authorising a bearer of an identity document to pass through an immigration control, the bearer having a pre-authorisation based on biometric data and a decentralised identity verified by the immigration authority, the method comprising:
capturing an image of the bearer;
forming a reduced set of authorised bearers from a plurality of bearers authorised by the authority, the reduced set being formed by a machine learning engine, the machine learning engine continuously predicting when individual bearers will arrive at the point of image capture;
matching the image of the bearer with images of the reduced set of authorised of bearers authorised by the authority; and
on successful matching, granting admission to the bearer.

### Claim 66 (depends on 65)

The method according to claim 65, wherein the predicted arrival time of each bearer is calculated from at least one of the arrival time of the bearer at the destination, the walk time from the point of arrival to the point of image capture and the age profile of the bearer.

### Claim 67

A method of pre-authorising a bearer of an identity document for travel, comprising the steps of:
providing a decentralised identity for the bearer;
providing digitally signed biometric data relating to the identity document to the bearer, the biometric data being signed by a trust anchor and validated as being issued to the decentralised identity, the biometric data including an image of the bearer, the provision of digitally signed biometric data comprising the bearer providing their decentralised identifier to a kiosk, the kiosk obtaining verification of the decentralised identifier from a location specified in the decentralised identifier, the verification including identity document data including the bearer's image;
prior to the bearer travelling, providing the bearer's decentralised identity and biometric data including the image to an authority responsible for admission of the bearer for verification and, on verification, the bearer receiving an authorisation from the authority.