# US 9,438,578 B2 · Digital communication biometric authentication

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- Number: US 9,438,578 B2
- Document ID: US9438578B2
- Status: Granted
- Kind: B2
- Application number: 13/969,513
- Filed: 2013-08-17
- Published: 2013-12-19
- Granted: 2016-09-06
- Earliest claimed: 2005-10-13
- Assignees: AT&T Intellectual Property II, L.P.
- Applicants: AT&T Intellectual Property II, L.P.
- Inventors: Pradeep K. Bansal; Lee Begeja; Carroll W. Creswell; Jeffrey Farah; Benjamin J. Stern; Jay Wilpon
- Web page: https://patentgrep.com/patent/US9438578B2

## CPC

- H04L 63/0861: {using biometrical features, e.g. fingerprint, retina-scan (cryptographic mechanisms or cryptographic arrangements for entity authentication using biological data H04L9/3231)}
- G06F 21/316: {by observing the pattern of computer usage, e.g. typical user behaviour}
- G06F 21/32: using biometric data, e.g. fingerprints, iris scans or voiceprints
- G06Q 20/386: {using messaging services or messaging apps (using mobile network messaging services for payment, e.g. SMS G06Q20/3255)}
- G06Q 20/40145: {Biometric identity checks}
- H04L 63/08: {for authentication of entities (cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32)}
- G06F 2221/2115: Third party
- G06F 2221/2139: Recurrent verification
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR

## Abstract

A biometric authentication system is disclosed that provides authentication capability using biometric data in connection with a challenge for parties engaging in digital communications such as digital text-oriented, interactive digital communications. End-user systems may be coupled to devices that include biometric data capture devices such as retina scanners, fingerprint recorders, cameras, microphones, ear scanners, DNA profilers, etc., so that biometric data of a communicating party may be captured and used for authentication purposes.

## Claims

### Claim 1

A method of authentication, comprising:
receiving, at an authentication server, a spoken response to a challenge issued between parties of an email communication;
retrieving, by the authentication server, a textual representation of N integer words contained within the spoken response;
querying, by the authentication server, an electronic database for the textual representation of the N integer words contained within the spoken response, the electronic database storing different electronic email messages previously exchanged between both of the parties;
receiving, by the authentication server, a confirmation that the textual representation of the N integer words matches at least a portion of one of the different electronic email messages previously exchanged between the parties; and
sending, from the authentication server, an authentication message to the parties of the email communication, the authentication message confirming identities associated with the parties of the email communication.

### Claim 2 (depends on 1)

The method of claim 1, further comprising storing the textual representation of the N integer words in the electronic database.

### Claim 3 (depends on 1)

The method of claim 1, further comprising querying the electronic database for one of the parties of the email communication.

### Claim 4 (depends on 1)

The method of claim 1, further comprising querying the electronic database for the both of the parties of the email communication.

### Claim 5 (depends on 1)

The method of claim 1, further comprising retrieving the N integer words from an audio signal.

### Claim 6 (depends on 1)

The method of claim 1, further comprising retrieving the textual representation of the N integer words.

### Claim 7

A system, comprising:
a processor; and
a memory device, the memory device storing instructions, the instructions when executed causing the processor to perform operations, the operations comprising:
receiving a spoken response to a challenge issued between a sender and a recipient associated with an electronic email message;
determining, from the spoken response, a textual representation of N integer text words contained within the spoken response;
querying an electronic database for the textual representation of the N integer text words, the electronic database storing text contained within different electronic email messages previously exchanged between the sender and the recipient;
receiving a confirmation that the textual representation of the N integer text words matches at least a portion of one of the different electronic email messages previously exchanged between the sender and the recipient; and
sending an authentication message to the sender and to the recipient, the authentication message confirming identities associated with the sender and the recipient.

### Claim 8 (depends on 7)

The system of claim 7, wherein the operations further comprise storing the textual representation of the N integer text words in the electronic database.

### Claim 9 (depends on 7)

The system of claim 7, wherein the operations further comprise querying the electronic database for one of the sender and the recipient.

### Claim 10 (depends on 7)

The system of claim 7, wherein the operations further comprise querying the electronic database for both of the sender and the recipient.

### Claim 11 (depends on 7)

The system of claim 7, wherein the operations further comprise retrieving the textual representation of the N integer text words.

### Claim 12

A memory device storing instructions that when executed cause a processor to perform operations, the operations comprising:
receiving a spoken response to a challenge issued between parties of an email communication;
determining, from the spoken response, a textual representation of N integer words;
querying an electronic database for the textual representation of the N integer words, the electronic database storing different email messages previously exchanged between the parties;
receiving a confirmation that the textual representation of the N integer words matches at least a portion of one of the different electronic email messages previously exchanged between both the parties; and
sending an authentication message to the parties to the email communication, the authentication message confirming identities associated with the parties of the email communication.

### Claim 13 (depends on 12)

The memory device of claim 12, wherein the operations further comprise storing the textual representation of the N integer words in the electronic database.

### Claim 14 (depends on 12)

The memory device of claim 12, wherein the operations further comprise querying the electronic database for one of the parties of the email communication.

### Claim 15 (depends on 12)

The memory device of claim 12, wherein the operations further comprise querying the electronic database for the both of the parties of the email communication.

### Claim 16 (depends on 12)

The memory device of claim 12, wherein the operations further comprise retrieving the textual representation of the N integer words.