Interface interference · Australia
Choice or information overload
Choice or information overload is a working label for this design mechanism: The volume or organisation of options or information makes meaningful comparison impractical and channels users toward a default or business-favoured path. This is editorial implementation guidance for Australian journeys, not a finding of unlawfulness. From 1 July 2027, a similar interface is relevant to ACL section 28B only if the complete consumer-connection, manipulation or unreasonable-distortion and actual-or-likely-detriment test is met. Current ACL rules require a separate assessment.
- Family
- Interface interference
- Also known as
- Journey stages
Definition
What is this pattern?
The volume or organisation of options or information makes meaningful comparison impractical and channels users toward a default or business-favoured path. This is a design and research taxonomy for learning and evidence review, not a statutory offence label or an automatic finding that an interface is unlawful.
How it works
The volume or organisation of options or information makes meaningful comparison impractical and channels users toward a default or business-favoured path. Excessive, overlapping or inconsistently organised options consume comparison effort while leaving one default or recommendation much easier to select.
Warning signs
- A concrete decision contains excessive or poorly organised choices or information.
- Key differences cannot be reasonably compared.
- A default or favoured route benefits from the overload.
Potential harms
- The volume and structure can make informed comparison impractical even without one visibly preferred plan.
- The apparent detail may overwhelm rather than enable a meaningful purpose-by-purpose choice.
Learn by comparison
What does this look like?
These fictional examples make the design mechanism easier to recognise. They do not depict a real company and do not establish that an individual interface is unlawful.
Illustrative example 1 · Tariff grid prevents a workable comparison
A fictional provider presents twenty-seven plans with inconsistent feature names, billing periods and footnote structures but offers no grouping, filters or stable comparison view.
Potential consumer harm: The volume and structure can make informed comparison impractical even without one visibly preferred plan.
Illustrative example 2 · Consent purposes fragmented into dozens of toggles
A fictional signup consent screen lists forty overlapping purposes across five nested panels, with duplicated labels and no summary of the resulting state.
Potential consumer harm: The apparent detail may overwhelm rather than enable a meaningful purpose-by-purpose choice.
Tariff grid prevents a workable comparison
A fictional provider presents twenty-seven plans with inconsistent feature names, billing periods and footnote structures but offers no grouping, filters or stable comparison view.
Choose from 27 plans. Inconsistent labels, units and dense footnotes require each plan to be decoded separately.. Selected: Open plan 17. Not selected: Compare grouped plans
Compare four plan types. Consistent price, term and exit fields make the grouped options comparable.. Not selected: Compare grouped plans. Not selected: Open plan 17. Choice consequences, expanded: The consequence of selecting “Compare grouped plans” is displayed beside the option.
Why the first version can mislead: The presentation changes what the user can notice or predict at the pricing decision. The problematic state shows: “Inconsistent labels, units and dense footnotes require each plan to be decoded separately.” Its influence should be tested by comparing the consequence and usability of “Open plan 17” with “Compare grouped plans”. The volume and structure can make informed comparison impractical even without one visibly preferred plan.
What a fairer design does: Group genuinely distinct options, use consistent attributes and offer a neutral comparison table with relevant filters.
Show annotated differences (4)
- Inconsistent labels, units and dense footnotes require each plan to be decoded separately.Why this state matters: The presentation changes what the user can notice or predict at the pricing decision. The problematic state shows: “Inconsistent labels, units and dense footnotes require each plan to be decoded separately.” Its influence should be tested by comparing the consequence and usability of “Open plan 17” with “Compare grouped plans”. The volume and structure can make informed comparison impractical even without one visibly preferred plan.
- Not selected: Compare grouped plansReview prompt: Do “Open plan 17” and “Compare grouped plans” receive comparable prominence and explain their consequences before activation?
- Consistent price, term and exit fields make the grouped options comparable.Fairer design: Group genuinely distinct options, use consistent attributes and offer a neutral comparison table with relevant filters.
- Choice consequences, expanded: The consequence of selecting “Compare grouped plans” is displayed beside the option.Review prompt: Capture every peer option, its default state and visual prominence; do those states support “A concrete decision contains excessive or poorly organised choices or information”?
Review questions (3)
- Do “Open plan 17” and “Compare grouped plans” receive comparable prominence and explain their consequences before activation?
- Capture every peer option, its default state and visual prominence; do those states support “A concrete decision contains excessive or poorly organised choices or information”?
- What neutral rendering or comprehension result would falsify the classification, particularly in light of “Complex product legitimately requiring many comparable options with effective filters and summary”?
Consent purposes fragmented into dozens of toggles
A fictional signup consent screen lists forty overlapping purposes across five nested panels, with duplicated labels and no summary of the resulting state.
Manage 40 data choices. Duplicated labels and nested toggles prevent a coherent view of what remains enabled.. Not selected: Audience measurement. Not selected: Content measurement. Not selected: Product development. Not selected: Partner insights. Not selected: Personalised offers. Open purpose 17
Choose optional purposes. Six distinct groups provide summaries, supporting detail and a visible final state.. Not selected: Service analytics. Not selected: Personalisation. Not selected: Partner sharing. Review six purpose groups. Purpose and refusal effect, expanded: The form explains why “Review six purpose groups” is requested and what happens if it is not used.
Why the first version can mislead: The presentation changes what the user can notice or predict at the signup decision. The problematic state shows: “Duplicated labels and nested toggles prevent a coherent view of what remains enabled.” Its influence should be tested by comparing the consequence and usability of “Open purpose 17” with “Review six purpose groups”. The apparent detail may overwhelm rather than enable a meaningful purpose-by-purpose choice.
What a fairer design does: Use understandable purpose groups, progressive detail and a persistent summary of the choices made.
Show annotated differences (4)
- Duplicated labels and nested toggles prevent a coherent view of what remains enabled.Why this state matters: The presentation changes what the user can notice or predict at the signup decision. The problematic state shows: “Duplicated labels and nested toggles prevent a coherent view of what remains enabled.” Its influence should be tested by comparing the consequence and usability of “Open purpose 17” with “Review six purpose groups”. The apparent detail may overwhelm rather than enable a meaningful purpose-by-purpose choice.
- Open purpose 17Review prompt: Do “Open purpose 17” and “Review six purpose groups” receive comparable prominence and explain their consequences before activation?
- Six distinct groups provide summaries, supporting detail and a visible final state.Fairer design: Use understandable purpose groups, progressive detail and a persistent summary of the choices made.
- Purpose and refusal effect, expanded: The form explains why “Review six purpose groups” is requested and what happens if it is not used.Review prompt: Which fields or permissions are required, what happens on refusal, and does the resulting state support this criterion: “Key differences cannot be reasonably compared”?
Review questions (3)
- Do “Open purpose 17” and “Review six purpose groups” receive comparable prominence and explain their consequences before activation?
- Which fields or permissions are required, what happens on refusal, and does the resulting state support this criterion: “Key differences cannot be reasonably compared”?
- What neutral rendering or comprehension result would falsify the classification, particularly in light of “mere long page without a decision link”?
What is a fairer alternative?
Structure choices around comparable dimensions, surface key consequences and avoid using volume to hide a default or preferred outcome.
Legal and information status
How Australian law may apply
The volume or organisation of options or information makes meaningful comparison impractical and channels users toward a default or business-favoured path. Excessive, overlapping or inconsistently organised options consume comparison effort while leaving one default or recommendation much easier to select. These harms describe a review risk, not an automatic legal conclusion. Australian section 28B commences on 1 July 2027 and requires its complete, context-specific test. Existing ACL provisions remain a separate current-law assessment.
ACL section 28B, inserted by the 2026 Act
Possible risk indicator
In pricing and signup journeys, the choice or information overload mechanism may warrant review where it manipulates a consumer or unreasonably distorts the decision environment and causes, or is likely to cause, detriment. The interface interference label and an interface similarity do not establish a contravention; the complete section 28B test, scope, facts and evidence must be applied from 1 July 2027.
Dark-pattern research taxonomy
Editorial analysis
The cited research sources support this working pattern within the interface interference family. It is editorial implementation guidance, not an Australian statutory category, regulator finding or legal safe harbour.
Evidence layers and open questions
Applicable law, enforcement records, policy preparation, stakeholder input, editorial analysis and unknown future details remain visibly distinct.
Final Act mappingEditorial implementation guidance
This editorial practice label is not itself an express statutory prohibition. Apply the complete provision and its scope to the facts.
Possible general-test applicationCommences 1 July 2027
ACL section 28B, inserted by the 2026 Act: In pricing and signup journeys, the choice or information overload mechanism may warrant review where it manipulates a consumer or unreasonably distorts the decision environment and causes, or is likely to cause, detriment. The interface interference label and an interface similarity do not establish a contravention; the complete section 28B test, scope, facts and evidence must be applied from 1 July 2027.
Existing ACLCurrent enforcement
Existing ACL provisions continue to apply on their own elements before and after commencement. The 2027 provisions must not be applied early.
Verified enforcement contextCurrent enforcement
No named pattern-specific enforcement example is asserted on this page. Existing ACL analysis remains fact-specific and separate from the 2027 provisions.
RegulationsRegulation pending
Later regulations may affect specified exclusions, matters or exceptions. That uncertainty does not postpone a core enacted rule unless the provision itself depends on prescription.
Regulator implementation materialGuidance pending
Government funding and parliamentary material anticipate regulator education and guidance. No dedicated final ACCC implementation guide is treated here as published.
Journey and evidence recommendationsEditorial implementation guidance
Structure choices around comparable dimensions, surface key consequences and avoid using volume to hide a default or preferred outcome. This is editorial portal guidance, not a statutory duty, regulator safe harbour or compliance certificate.
Context matters
Context and boundary cases
- A concrete decision contains excessive or poorly organised choices or information.
- Key differences cannot be reasonably compared.
- A default or favoured route benefits from the overload.
- Boundary to test: Complex product legitimately requiring many comparable options with effective filters and summary
- Boundary to test: mere long page without a decision link
When a similar design can serve a legitimate purpose
- Complex product legitimately requiring many comparable options with effective filters and summary
- mere long page without a decision link
Operational review
What teams should review
- Teams
- Do “Open plan 17” and “Compare grouped plans” receive comparable prominence and explain their consequences before activation?
- Capture every peer option, its default state and visual prominence; do those states support “A concrete decision contains excessive or poorly organised choices or information”?
- What neutral rendering or comprehension result would falsify the classification, particularly in light of “Complex product legitimately requiring many comparable options with effective filters and summary”?
- Do “Open purpose 17” and “Review six purpose groups” receive comparable prominence and explain their consequences before activation?
- Which fields or permissions are required, what happens on refusal, and does the resulting state support this criterion: “Key differences cannot be reasonably compared”?
- What neutral rendering or comprehension result would falsify the classification, particularly in light of “mere long page without a decision link”?
Evidence to retain
- Annotated pricing and signup screenshots at each responsive breakpoint
- The complete state sequence before, during and after the consumer decision
- Design-system component, content, default and configuration records for the reviewed release
- Operational records substantiating price, availability, timing and eligibility claims
- Usability, accessibility, reversal, complaint and support evidence relevant to consumer impact
- A dated product and legal review record identifying evidence, uncertainties and release decisions
Legal map and implementation tools
Evidence base
Sources
- An Ontology of Dark Patterns KnowledgeGray et al.; ACM CHI 2024 · Secondary · checked 2026-09-14 · DOI 10.1145/3613904.3642436; arXiv:2309.09640
- Behavioural study on unfair commercial practices in the digital environmentEuropean Commission, Directorate-General for Justice and Consumers · Secondary · checked 2026-09-14 · DOI 10.2838/859030; ISBN 978-92-76-52316-1
- Competition and Consumer Amendment (Unfair Trading Practices) Act 2026Federal Register of Legislation · Primary · checked 2026-09-14 · C2026A00064
- Competition and Consumer Act 2010, including Schedule 2: Australian Consumer LawFederal Register of Legislation · Primary · checked 2026-09-14 · C2004A00109
- Unfair trading tricks and traps to be bannedTreasury Ministers · Primary · checked 2026-09-14
- Inquiry into the Competition and Consumer Amendment (Unfair Trading Practices) Bill 2026Senate Economics Legislation Committee · Primary · checked 2026-08-09