User Authentication

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User Authentication Expert Witness - Sample Bios

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The below expert witness bios represent a small fraction of those User Authentication experts known by Cahn Litigation Services. These bios are provided to give attorneys a sense of the User Authentication landscape.


Expert Witness #209094

This expert is a Computer Scientist and Technology Consultant specializing in Telecommunications, Mobile Network communications, Point of Sale, and Secure financial transactions. This expert brings many years of experience in a diverse set of technologies including Credit Card transaction processing, eWallet validation, Payment Gateways, Point of Sale devices including NFC/RFID, Magnetic Stripe, MST, and Chip readers, and Wireless communications (WiFi, Bluetooth, GSM, and Broadband). This expert also implemented methods for privacy and fraud protection, encrypted wireless communications, tokenization, authentication and authorization.

This expert has been a testifying expert for over 60 cases including patent litigation, ITC, IPRs, and CBMs for secure financial transactions, Point of Sale, Mobile and Wireless payment authentication, providing expert reports, deposition, and trial testimony.

Summary of Related Professional Experience

Developed multiple credit card payment methods and payment gateway solutions for eCommerce clients.

Developed patent claims to cover secure mobile payment transactions and account access using user id authentication. Development of high-speed wireless communications using wifi mesh networks and Bluetooth communications.

Implemented applications for wireless data communications using 802.11 and Bluetooth on wireless, local secure networks. Audio data encryption for VoIP, fax and modem application. Developed Data Transaction Authentication and verification (to identify tampering, or modification).

System Architect and developer of financial systems for:

Online Trading – Developed 1st version of Securities trading system

PDA Trader Access - Wireless retrieval of financial transactions information

Secure online systems for payment transactions and policyholder claims processing


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Expert Witness #221869

This expert is the Co-Founder of two successful security consulting firms specializing in network security and online fraud prevention. This expert has an extensive background in electronic payments and transactions, contributed to the very early Bluetooth specs, and published the first analysis of Bluetooth security vulnerabilities. This expert developed PoS related technologies and is highly knowledgeable when it comes to chip/stripe communication, having published on aspects of AIDC.

As a Principal Scientist this expert's mandate was to determine the impact of future fraud scenarios on commerce and authentication and developing intellectual property to address such problems. This expert is known throughout the industry as one of the more prominent computer scientists working in authentication, and user interfaces and payment systems. Along with being the named inventor on over one hundred issued and pending U.S. patents, this expert is one of the most cited authors in computer science. This expert has experience working as an expert witness in several patent litigation cases,

having been deposed ~30 times and testified in marksman hearings twice.


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Expert Witness #218702

This expert has many years of development and operations experience in high technology companies. This expert has made hands-on technical contributions to numerous business software application development efforts. This expert’s knowledge and experience extends over three principal areas: (1) Architecture and design of complex web-server and client-server business software systems, (2) detailed design and coding techniques for business software applications, and (3) software project management and development contracts. This expert’s detailed programming knowledge encompasses Java, C, C++, ASP, Python and Visual Basic languages, as well as assembly language for Intel and 68K microprocessors and real-time DSP applications. This expert has also managed programming teams that created applications for mainframes. This expert’s networking experience includes TCP/IP router development for Ethernet LAN's, fiber optic links, and wide area networks. This expert has managed many client-server and web-based ERP business solutions projects for Financial, Inventory, Order Entry, Shipping, Supply Chain and Manufacturing core modules. This expert has worked on semiconductor manufacturing systems involving yield prediction and supply chain management using statistical forecasting. This expert has direct experience with Oracle 8.05, 8i and 9i as well as SQL Server 7.0 and SQL Server 2000 for both transactional and data warehouse systems. This expert has also held responsibilities for internal network operation, intranet, and public access web server IT functions in several corporations. In this role this expert gained a detailed understanding of security issues such as SSL, user authentication, network security, firewalls, hacking countermeasures. This expert is also knowledgeable about email servers, backup and restore procedures, and service level agreements for customer-outsourced data in ASP systems.

This expert holds a B.S. degree with 1st Class Honors, an MSEE, and a Ph.D. also in Electrical Engineering. This expert has extensive litigation experience including deposition and courtroom testimony, claim construction for Markman hearings, infringement and validity rebuttal reports in support of plaintiffs, as well as numerous non-infringement and invalidity reports on behalf of defendants.   


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Expert Witness #230901

This expert is a Computer Scientist and Technology Consultant specializing in Telecommunications, Call Center applications, and Media Distribution. This expert brings many years of experience in a diverse set of technologies including CTI (computer telephony integration), digital voice processing, speech recognition and Natural Language processing. This expert has a deep understanding of protocols and has designed protocols for many different kinds of systems and has had some of them adopted by the American National Standards Institute (ANSI). This expert has been a consulting expert in approximately 50 matters, IPRs, and Patent Litigation cases including cases for Telecommunication and Speech Recognition providing infringement, invalidity, and deposition testimony. This expert has testified at hearings and at trial for about 10 cases.

Professional Experience

Designed and developed some of the earliest available low-bit-rate digital voice communication products for long haul networks. Work included voice models, input digitization, voice feature extraction, encoding and decoding and interfaces to packet network systems. Designed protocols for various communications devices such as data encryptors.

Manager of Embedded Systems Group. Responsible for designing, among other things, protocols for factory automation systems, including communications and networking devices to handle interfacing host computers to subsystems that used different protocols.

Technology consulting in the area of Call Centers, Telephony, Wireless communication, mobile applications, biometrics and user authentication implementing Speech Recognition.

Provide level 1 & 2 evaluation of Patent portfolios to determine strongest / most valuable patents and identify vendors/products that read on stronger patents. Patents were evaluated in: Telephony, VoIP, Wireless devices, speech recognition, and digital device interfaces.

Provided in-depth research services to inventors and Intellectual Property investors. Also consulted on the design of solutions with embedded voice recognition features in the consumer products space.

This expert has been involved in the study and application of Natural Language understanding and processing, especially related to voice to text conversion, knowledge discovery, fact extraction, summarization, language weighting and importance models, etc. This expert has developed suites of software for each of these areas.

Case Experience

Patent Litigation – Consulting expert with responsibility for leading a group of 10 code reviewers reviewing more than 56 gigabytes of source code over a period of 10 months. The source code was associated with servers and services, content distribution servers, content ingestion servers, security and protocols for media sharing and distribution frameworks and architectures of business systems. Also provided expert consultation to litigation team on system architectures, applications, devices, and services. Coordinated with the team leads reviewing source code on similar architectures for other device manufacturers.

Patent Litigation - Consulting expert on infringement and invalidity of patents relating to voice network functions and processing in VoIP networks including enterprise and residential networks.


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