How should healthcare organisations choose authentication policies for network-connected medical devices?

Choosing authentication policies by care setting and device criticality

For network-connected medical devices, the right authentication policy is not one-size-fits-all. A bedside monitor, a shared imaging console, and a remote administration interface can justify different sign-in strength, session handling, and step-up requirements. The policy should start with the care setting, the device’s exposure to PHI, and how often access must happen during active treatment.

In practice, that means the strongest policy is not always the best policy if it slows urgent care or forces staff to bypass controls. Healthcare organisations should define which users, roles, and workflows need rapid access, which actions require stronger verification, and which devices can tolerate reauthentication without harming care delivery.

Network-connected devices also need policies that fit their operating limits. Many devices have constrained interfaces, limited session options, or vendor-specific login flows, so the organisation must choose controls that are enforceable on the device itself or through a compensating access layer. A policy that cannot be implemented reliably will usually fail in the ward, not just in the design document.

What strong device authentication should protect

Authentication policy for medical devices is really about protecting three things at once: the user’s identity, the device’s trust boundary, and the confidentiality of patient data. Where access to PHI or device controls can affect diagnosis, treatment, or dosing, access decisions should be explicit and traceable. Where the device is only lightly exposed, simpler authentication may be acceptable if the residual risk is understood and documented.

Organisations should distinguish between primary clinical use, administrative access, and remote service access. Those paths do not carry the same risk, and they should not share the same authentication posture by default. A clinician signing into a device at the point of care may need speed and continuity, while a technician performing remote maintenance or configuration changes should face a stricter policy and stronger proof of identity.

The practical benchmark is whether the policy makes access attributable without creating unsafe friction. A good policy supports reliable user identity, reduces shared-account behaviour, and preserves auditability, while still allowing clinicians to do their jobs quickly. For general identity assurance guidance, healthcare teams can align device sign-in strength with NIST SP 800-63 Digital Identity Guidelines.

How policy design changes with workflow and device risk

The policy should be tailored to workflow first, then hardened as the device’s risk increases. Shared workstations, medication-adjacent systems, and devices used in rapid succession across multiple patients need fast reauthentication, session timeout rules, and strong recovery processes. Devices that handle PHI or influence treatment should receive stricter controls than devices used only for monitoring or non-clinical support.

One useful rule is to prefer the least disruptive control that still preserves accountability. If clinicians must repeatedly authenticate during time-sensitive care, organisations should look at proximity-based sign-on, badge tap, passkey, or federation-based patterns before falling back to shared passwords or disabled controls. For broader workforce authentication patterns that reduce unsafe workarounds, the Workforce Identity Security Guide and Passwordless and Passkeys Guide are useful reference points.

Where devices are exposed to remote administration or third-party service access, the policy should require stronger authentication than local clinical use. That usually means separate accounts, tighter approval, and more restrictive session controls for privileged actions. Healthcare organisations should also treat device authentication as part of a broader medical device security posture, not as an isolated login setting, as outlined in the Device and IoT Identity Guide.

Risk and Threat Considerations

Poorly chosen authentication policies create both safety and security exposure. If the policy is too weak, attackers can abuse stolen passwords, reused credentials, or vendor access paths to reach devices, PHI, or upstream clinical systems. If it is too strict or too slow, clinicians may work around it by sharing logins, leaving sessions open, or disabling controls in practice.

Failure mechanism: The common failure is a mismatch between the policy and the real workflow, where either the authentication strength is too low for the exposure or the user friction is high enough to drive unsafe exceptions, shared accounts, or unattended sessions.

Impact: That mismatch can lead to unauthorized device access, exposure of patient data, weak audit trails, delayed care, and a larger blast radius when one credential or session is compromised.

Practitioner Guidance

What to prioritise: Start with devices that combine PHI access and operational criticality, then separate them from low-risk or read-only devices. Those are the places where policy mistakes are most likely to affect both patient care and security.

What to verify: Confirm that the policy can be enforced on the actual device or through a trusted access layer, not just in a procurement document. If clinicians cannot complete the workflow without bypassing the control, the policy is not ready for production.

Decision rule: If access is time-sensitive and clinically repeated, optimise for fast but attributable sign-in. If access is privileged, remote, or vendor-supported, require stronger authentication and tighter session controls even when that adds friction.

Practitioner takeaway: The best policy is the one clinicians will actually use correctly, while still making every meaningful device action attributable and every high-risk access path harder to abuse.

Related resources from NHI Mgmt Group

• How should healthcare organisations reduce breach risk across EHRs, connected medical devices, and third-party access?
• How should healthcare organisations use digital certificates to secure connected medical devices?
• How can healthcare organisations reduce the risk from insecure connected medical devices?
• How should organisations choose an identity management architecture when devices, applications, and network resources use different authentication protocols?