John Callahan

Opinions expressed by ICN authors are their own.

John Callahan, Chief Technology Officer at Veridium, is responsible for the development of the company’s world class enterprise-ready biometric solutions, leading a global team of software developers, computer vision scientists and sales engineers. He has previously served as the Associate Director for Information Dominance at the U.S. Navy’s Office of Naval Research Global, London UK office, via an Intergovernmental Personnel Act assignment from the Johns Hopkins University Applied Physics Laboratory. John completed his PhD in Computer Science at the University of Maryland, College Park.

The opinions expressed in this blog are those of John Callahan and do not necessarily represent those of IDG Communications, Inc., its parent, subsidiary or affiliated companies.

Self-sovereign biometrics and the future of digital identity

Biometrics and blockchains: the Horcrux protocol [part 3]

Biometrics and blockchains: the Horcrux protocol [part 3]

In this third and final article of the series, I discuss a new idea that will securely link your biometrics and online identity credentials via blockchain technologies.

Biometrics and blockchains: Why identity matters [part 2]

Biometrics and blockchains: Why identity matters [part 2]

One of the most common new applications for blockchains is digital identity. Today, your passport, driver’s license, birth certificate and other forms of identity are recorded primarily on paper, kept on your person or in filing...

Biometrics and blockchains: Why identity matters (part 1)

Biometrics and blockchains: Why identity matters (part 1)

Your identity matters online because so many services now require proof for access to money, benefits, and medical information. Document-based credentials, like birth certificates, passports, and driver's licenses, will become...

Double assurance: Biometric transaction signing on the blockchain

Double assurance: Biometric transaction signing on the blockchain

Together with biometric transaction signing, blockchain solutions provide strong tamper-evident protections for transaction logging

Biometrics can provide better data provenance

Biometrics can provide better data provenance

Data provenance is "showing your work": the entire historical record for any piece of data, stored and searchable. Given the high stakes of its data and the tight regulations around its practices, the financial industry is...

Could iris recognition be coming to the enterprise?

Could iris recognition be coming to the enterprise?

Iris recognition will be widely included in future mobile devices reducing the hardware investment and potentially preventing fraudulent access via biometric authentication

Mobile devices: The 'last mile' to enterprise biometrics

Mobile devices: The 'last mile' to enterprise biometrics

Businesses need to completely secure access to their systems and data and be certain that only those who are granted access have it

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