Mobile-Bound Passkey – stored exclusively on a single, authorized mobile device

Mobile-Bound Passkey Passkeys linked exclusively to a corporate phone

What is a Mobile-Bound Passkey?

A Mobile-Bound Passkey is a passwordless authentication method in which a cryptographic key (passkey) is stored exclusively on a single, authorized mobile device. Unlike synchronized passkeys, which can be copied and stored in the cloud, a Mobile-Bound Passkey cannot be migrated to other devices. The private key is securely stored within a dedicated application and linked to a protected environment on the device, such as a Secure Element or Trusted Platform Module (TPM).

This approach gives organizations full control over user authentication while eliminating risks associated with cloud storage. Mobile-Bound Passkey combines strong security with user convenience, addressing enterprise needs for identity and access management (IAM).

How Does a Mobile-Bound Passkey Work?

  1. Registration – The user registers a Mobile-Bound Passkey on their mobile device using a dedicated application. A cryptographic key is generated and securely stored in the device’s protected environment.
  2. Authentication – When the user attempts to access a system (e.g., a corporate application), authentication is performed using the key stored on the phone—without the need for a password.
  3. No Synchronization – The private key is not copied or stored in the cloud, eliminating the risk of unauthorized access.

Mobile-Bound Passkeys follow FIDO2 and WebAuthn standards, making them compatible with enterprise IAM systems such as SAML, OAuth, and OpenID Connect without requiring modifications to existing applications.

Benefits of Mobile-Bound Passkey

1. Increased Security

  • The private key is stored locally, removing the risk of compromise from cloud breaches.
  • Since passkeys cannot be copied or synced, there is no risk of unauthorized migration to other devices.
  • Hardware-based security mechanisms, such as Secure Element or TPM, protect against phishing and man-in-the-middle (MITM) attacks.

2. Full Enterprise Control

  • Organizations can enforce the use of Mobile-Bound Passkeys exclusively on company-approved devices.
  • Eliminates the need for physical security keys, such as YubiKeys, simplifying logistics and reducing costs.
  • Allows centralized management of authentication policies, ensuring compliance with security regulations.

3. Compliance with Security Regulations

  • Mobile-Bound Passkeys meet the requirements of PSD2, which prohibits storing authentication keys in the cloud.
  • Helps companies comply with NIS2, DORA, and GDPR, which emphasize strong authentication and data protection.
  • Aligns with Zero Trust Security principles by reducing the risk of unauthorized access.

4. Improved User Experience

  • Fast and seamless authentication—users log in using their phone instead of entering passwords.
  • No need to remember or manage multiple passwords.
  • Works with biometric authentication (Face ID, fingerprint), providing a simple yet secure login process.

Where Can Mobile-Bound Passkey Be Used?

Mobile-Bound Passkey is ideal for industries that require high levels of security and regulatory compliance.

1. Financial Services

  • Banks and financial institutions can adopt Mobile-Bound Passkeys to comply with PSD2 and enhance security for both employees and customers.
  • Eliminates the need for physical tokens for authentication.

2. Healthcare

  • Hospitals and medical facilities can use Mobile-Bound Passkeys to protect patient data in compliance with HIPAA.
  • Reduces the risk of unauthorized access to sensitive medical records.

3. Government and Public Sector

  • Government agencies can implement Mobile-Bound Passkeys to secure systems and databases from unauthorized access.
  • Avoiding cloud-based passkeys enhances national security and minimizes the risk of external interference.

4. Enterprises and Corporations

  • Mobile-Bound Passkeys simplify workforce authentication, reducing password resets and login-related support tickets.
  • Organizations can enforce authentication policies requiring the use of company-approved mobile devices.

Conclusion

Mobile-Bound Passkey is a breakthrough solution for enterprises looking to adopt passwordless authentication while maintaining full security control and compliance.

By keeping authentication keys exclusively on a single mobile device, Mobile-Bound Passkey eliminates risks associated with cloud storage and synchronization, delivering:

  • Strong authentication powered by hardware-level security mechanisms.
  • Full enterprise control, allowing organizations to enforce security policies.
  • Regulatory compliance with industry security and data protection standards.
  • Better user experience, eliminating the need for physical security keys or passwords.

For organizations seeking a secure and modern approach to passkey authentication, Mobile-Bound Passkey is an effective and scalable solution.

Want to learn more about implementing Mobile-Bound Passkeys in your organization? Contact a Secfense expert and watch our webinar on this topic.

Simplify passwordless security with FIDO and passkeys Contact us for seamless implementation

Want to learn more about implementing Mobile-Bound Passkey in your organization? Contact a Secfense expert and download a special report on implementing passkeys in organizations.

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Testimonials

We are faced with new challenges every day. We must always be one step ahead of the attackers and know what they are going to do before they do it. We are convinced that the User Access Security Broker will bring security to a new level, both for those working at the office and from home. For us, working with Secfense is an opportunity to exchange experience with developers who put great value on out-of-the-box thinking.

Krzysztof Słotwiński

Business Continuity and Computer Security Officer

BNP Paribas Bank Poland

As part of the pre-implementation analysis, we verified that users utilize a wide range of client platforms: desktop computers, laptops, tablets, smartphones, and traditional mobile phones. Each of these devices differs in technological advancement, features, and level of security. Because of this, and also due to the recommendation of the Polish Financial Supervision Authority (UKNF), we decided to introduce additional protection in the form of multi-factor authentication mechanisms based on FIDO. As a result, users of our applications can log in safely, avoiding common cyber threats such as phishing, account takeover, and theft of their own and their clients’ data.

Marcin Bobruk

CEO

Sandis

We are excited to partner with Secfense to enhance our user access security for our web apps. By integrating their User Access Security Broker, we ensure seamless and secure protection for our applications and systems, delivering superior security and convenience to our customers.

Charm Abeywardana

IT & Infrastructure

Visium Networks

Before investing in Secfense, we had the opportunity to talk to its existing clients. Their reactions were unanimous: wow, it’s so easy to use. We were particularly impressed by the fact that implementing their solution does not require the involvement of IT developers. It gives Secfense a huge advantage over the competition, and at the same time opens the door to potential customers who so far were afraid of changes related to the implementation of multi-factor authentication solutions.

Mateusz Bodio

Managing Director

RKKVC

Even when the network and infrastructure are secured enough, social engineering and passwords can be used to gain control of the system by attackers. Multifactor authentication is the current trend. Secfense addresses this and allows you to build zero trust security and upgrade your current systems to passwordless applications within minutes, solving this problem right away,” said Eduard Kučera, Partner at Presto Ventures and cybersecurity expert – former Director in hugely successful Czech multinational cyber security firm Avast.

Eduard Kučera

Partner

Presto Ventures

One of the biggest challenges the world is facing today is securing our identity online. That’s why we were so keen to have Secfense in our portfolio. They make it possible to introduce strong authentication in an automated way. Until now, organizations had to selectively protect applications because the deployment of new technology was very hard, or even impossible. With Secfense, the implementation of multi-factor authentication is no longer a problem, and all organizations can use the highest standards of authentication security.

Stanislav Ivanov

Founding Partner

Tera Ventures