Definition and Purpose

Non-repudiation is a foundational principle in cybersecurity. It ensures that a user or system cannot deny having taken a specific action. These actions may include sending an email, logging into a workstation, modifying a file, or approving a transaction. The key idea is to create an irrefutable link between the actor and the action performed.

To achieve non-repudiation, systems often rely on digital tools. These may include digital signatures, secure audit logs, biometric records, or hardware-based tokens. Each of these mechanisms helps verify the identity of the user and confirm the integrity of the data or action in question.

As a result, non-repudiation is especially important in sectors that demand high accountability. For instance, financial institutions use it to confirm who authorized transactions. Hospitals rely on it to track who accessed patient records. Legal and government systems use it to ensure that approvals, timestamps, and access logs hold up under audit or legal scrutiny.

In short, non-repudiation builds trust in digital systems. It ensures that every action can be traced, verified, and held accountable, reducing the risk of fraud, disputes, and unauthorized activity.

GateKeeper Proximity Enhances Non-repudiation Through Identity-linked Access

GateKeeper Proximity strengthens non-repudiation by ensuring that every login, access event, and workstation interaction is directly linked to a specific user through their assigned proximity token. Each authentication action is logged in real time within GateKeeper Hub, creating a reliable audit trail that proves who accessed what, when, and for how long. Because credentials are never shared or typed, and access depends on the presence of a unique physical token, users cannot plausibly deny having accessed a system. This identity-bound access model enhances organizational accountability, supports regulatory compliance, and helps mitigate risks related to insider threats or disputed transactions.