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Using use cases to validate navigation flows

A use case explains why a person visits a service, while a navigation flow maps the route available to reach an outcome. Joining them gives teams a practical way to judge whether structure, labels and recovery options support the user’s goal, rather than merely proving that a screen works.

UCDmanager keeps those artefacts together with the surrounding research record. A project can define user roles, attach personas and evidence, and link each role to the scenarios it needs to complete. This prevents a generic journey from being tested with everyone, which can conceal the needs of first-time, returning, assistive-technology and administrator users.

Validation starts by turning each scenario into a task with a clear beginning, destination and success condition. The team then compares the intended route with what participants actually do, looking for detours, dead ends, hesitation and uncertainty as well as completion.

For Australian audiences, assumptions need grounding in local journeys. A Sydney commuter, a Melbourne CBD worker, a Brisbane customer and a regional participant may approach the same service with different devices, connections and expectations. Date and time labels must work across AEST and AEDT; Australian English, AUD pricing with GST-inclusive totals and familiar click-and-collect patterns can also affect how a flow feels.

Model the journey around a user goal

Choose one bounded goal rather than a tour of every feature. Record the actor, trigger, required data, main success scenario, alternative paths and resulting state. Preconditions and postconditions make the flow testable: users should begin in a known state and leave with a meaningful result.

When several roles share a journey, a user role matrix guide can separate permissions, needs and task frequency. That prevents an overly broad task from hiding a navigation problem that affects only one group. It also gives testers enough context to decide whether an unexpected action is reasonable exploration or a genuine usability failure.

Make the primary route the reference path, but give every scenario at least one exception branch. A user may lack a saved address, change plans, use a different login or recover from an incorrect choice. Recording those branches in the use case gives evaluators specific questions without prescribing a single correct click sequence.

Turn scenarios into testable paths

In a UCDmanager project, convert the use case into a neutral task script that names the starting point, available information, intended destination and completion criterion. Avoid teaching participants where to tap. Their route should reveal whether labels, hierarchy and back navigation support independent wayfinding.

Map each step to a screen or state and attach an expected outcome. Criteria might require a user to recognise the current location, change a key detail without starting again, and receive a clear confirmation. These checks create traceability from a design requirement to observed behaviour.

Research records also need appropriate custody. If screen recordings or identifiable notes are involved, teams should review storage location, access and retention. Comparing hosting options can help identify technical controls, but Australian privacy obligations, participant consent and organisational policy should determine the final choice.

Evaluate navigation before live testing

Before recruiting participants, run an expert review of the information architecture and representative screens. A heuristic evaluation checklist can be adapted to the journey, with extra attention on navigation consistency, visible system status, user control and error recovery.

Ask reviewers to follow the use case without commentary, then record every point where the expected path and the interface diverge. Treat disagreement between reviewers as a prompt for clearer assumptions, not as proof that one layout is objectively correct.

Navigation review signals

Test realistic routes with Australian participants

Recruit participants who reflect the roles and conditions named in the scenario, including people with varied digital confidence and culturally and linguistically diverse backgrounds. For Australian Government services, WCAG 2.2 AA is a baseline expectation; accessibility needs should shape recruitment rather than appear as a later add-on.

In Australian research, test the channels customers actually use: a small phone screen on a busy Sydney commute, a desktop at a Melbourne CBD desk, and a lower-bandwidth mobile session with a participant outside major city centres. Use Australian English and realistic data such as local postcodes, but do not assume devices or connectivity are uniform across Australia.

Session evidence to capture

Compare behaviour across participant groups without treating one route as universal. Segment results by role, device, familiarity and accessibility need, then revise both the use case and the interface. A flow that works for an expert can still fail a first-time customer using a screen reader.

Connect findings back to the product

Turn findings into ranked design actions: critical navigation failures first, then repeated confusion, then lower-impact wording issues. Update the use case, route map and acceptance criteria together so the evidence remains traceable to a requirement and can be retested later.

In regulated mining contexts, teams may cross-check role handoffs against mining safety guidance and internal competency requirements. Usability evidence should still remain focused on whether people can navigate safely and recover from mistakes, rather than substituting for formal sign-off.

Maintain a decision log for disputed findings and nominate an owner for each flow change. Re-run the smallest relevant scenario after implementation, then schedule broader regression checks whenever labels, navigation patterns or underlying requirements shift. This keeps use cases active as design contracts instead of static documentation.