[ PICTOGRAM CASE HISTORY ]

Material Symbols Captive Portal Icon (Outlined). Needs intervention.

Visible referent: captive portal. Intended message: The icon must communicate Captive Portal in a digital interface.. The report separates observed asset evidence, submitted context, and public evidence signals.

0.60

PCS

0.41

CLL

0.51

NTR

[ FEATURED PICTOGRAM ]

Paper

Ink

pictoclarity / material-symbols-captive-portal-outlined

Output - Material Symbols Captive Portal Icon (Outlined)

Assessing the communicative effectiveness of the Captive Portal icon

This reviewed catalog report estimates clarity for Captive Portal in default interface contexts. Scores are screening estimates and do not replace user testing.

Mobile appWeb appDesktop app

0.60

PCS

PictoClarity Score

0.41

CLL

Convention Learning Load

0.51

NTR

Neurocognitive Transfer Risk

Read Evidence→

[ HOW THE CASE READS ]

From Input To Public Evidence.

The application stores structured evidence. The public page turns it into a readable pictogram case history.

Submitted Context

Framework output for the Material Symbols Captive Portal icon in the outlined style.

Primary Finding

Primary referent: captive portal.

Metric Reading

Implied function: The icon must communicate Captive Portal in a digital interface..

Public Recommendation

Conduct representative user testing with diverse user groups to validate comprehension and reduce confusion risk before publication.

[ EVIDENCE SCREENING ]

What The Estimate Surfaces.

Semantic Transparency Score

Input

Expected

→

Estimated

0.50

Confusion Risk Index

Input

Possible

→

Estimated

0.60

Readability Test Score

Input

Visual

→

Estimated

0.75

PictoClarity Score

Input

Estimated

→

Estimated

0.60

Needs intervention 0.60

The pictogram carries meaningful clarity risk. The estimate applies to this pictogram, this meaning, and this public context.

Last Reviewed

Jun 24, 2026

[ SCORE SCALE ]

The Public Verdict Has A Range.

The level explains the estimated context. It is not a certification.

0.80-1.00

Strong clarity

The pictogram communicates well in this context.

Use it, then keep testing with real users.

0.65-0.79

Usable with support

The pictogram works with labels or context.

Pair it with text and monitor interpretation.

0.50-0.64

Needs intervention

Current report

The pictogram carries meaningful clarity risk.

Improve the symbol before relying on it.

0.00-0.49

Not reliable

The pictogram does not communicate enough alone.

Replace it or add strong alternative support.

[ CONVERGENCE PROFILE ]

Where Meaning Converges.

The profile compares visual evidence, semantic extraction, cultural recognition, time, and cognitive context. It describes estimated convergence, not universal validity.

Convergent meaning profile

The radar shows where meaning converges. It does not certify universal validity.

Area

0.24

Balance

0.70

Perceptual

0.75

Semantic

0.50

Functional

0.57

Cultural

0.30

Temporal

0.56

Neurocognitive

0.56

Context Independence

0.55

Collective Resonance

0.24

Weakest Axis

Collective Resonance

How strongly public evidence supports shared recognition and persistence.

Strongest Axis

Perceptual Convergence

How strongly visual form survives size, blur, contrast, and detail loss.

Convergent meaning profile
Axis	Score	Description
Perceptual Convergence	0.75	How strongly visual form survives size, blur, contrast, and detail loss.
Semantic Convergence	0.50	How strongly extracted meaning converges on one interpretation.
Functional Convergence	0.57	How strongly the symbol maps to the intended function.
Cultural Convergence	0.30	How strongly recognition holds across cultural evidence and assumptions.
Temporal Convergence	0.56	How strongly meaning persists over time without semantic decay.
Neurocognitive Convergence	0.56	How strongly the symbol follows AAC pictogram reading: transparent referent, concrete action, low convention load, and support.
Context Independence	0.55	How strongly meaning survives without external labels or placement cues.
Collective Resonance	0.24	How strongly public evidence supports shared recognition and persistence.

Evidence Notes.

8 Findings Published

Evidence

Primary referent: captive portal.

Evidence

Implied function: The icon must communicate Captive Portal in a digital interface..

Evidence

Metaphor type: functional.

Evidence

The icon's primary referent is 'captive portal' and it is intended to communicate this concept in digital interfaces across mobile, web, and desktop platforms.

Evidence

Visual form is strong with high perceptual convergence (0.75), indicating good resilience to size, blur, contrast, and detail loss.

Evidence

Semantic convergence (0.5) and functional convergence (0.57) are moderate, showing that while the icon generally conveys its intended meaning and function, some ambiguity remains.

Evidence

Cultural convergence is low (0.3), reflecting limited shared recognition and cultural evidence supporting the icon's meaning.

Evidence

Temporal convergence (0.56) suggests the icon's meaning persists reasonably well over time without significant semantic decay.

[ TRANSFER / METRIC CHART ]

Public evidence trend

The chart shows public evidence buckets by evidence year. Cohort breakpoints appear only when an aging referent is active.

Public evidence trend

Evidence year: 2026

Evaluation

Reference point.

X axis: Evidence year

Public evidence trend
Evidence year	Semantic Transparency	Cultural Evidence
1996	0.28	0.72
1997	0.28	0.72
1998	0.28	0.72
1999	0.28	0.72
2000	0.68	0.72
2001	0.67	0.72
2002	0.71	0.73
2003	0.75	0.73
2004	0.76	0.74
2005	0.74	0.73
2006	0.75	0.73
2007	0.76	0.73
2008	0.78	0.73
2009	0.76	0.74
2010	0.76	0.74
2011	0.78	0.74
2012	0.77	0.73
2013	0.74	0.74
2014	0.75	0.74
2015	0.74	0.74
2016	0.76	0.75
2017	0.75	0.74
2018	0.78	0.76
2019	0.76	0.74
2020	0.74	0.74
2021	0.76	0.75
2022	0.76	0.74
2023	0.28	0.27
2024	0.28	0.29
2025	0.28	0.27
2026	0.28	0.27

Cohort transfer is inactive for this published report. The chart above uses evidence-year or metric data instead.

asset source

Material Symbols captive_portal SVG

Material Symbols by Google

Unofficial clarity analysis. PictoClarity is not affiliated with, endorsed by, or sponsored by Google. Material Symbols are provided by Google under their published license.

Open source

historical evidence

Google Books Ngram annual buckets: captive portal

Google Books Ngram / 1996-2026

Annual extraction returned 5756507 records across 23 active years.

Open source

historical evidence

Wikimedia Pageviews annual buckets: captive portal

Wikimedia Pageviews / 1996-2026

Annual extraction returned 95 records across 9 active years.

Open source

historical evidence

Google Books Ngram annual buckets: network access authentication

Google Books Ngram / 1996-2026

Annual extraction returned 8957614 records across 23 active years.

Open source

historical evidence

Google Books Ngram annual buckets: symbolic

Google Books Ngram / 1996-2026

Annual extraction returned 20696972 records across 27 active years.

Open source

[ TECHNICAL SCORECARD ]

The Metrics Behind The Case.

PCS

0.60

PictoClarity Score

STS

0.50

Semantic Transparency Score

CRI

0.60

Confusion Risk Index

VRS

0.72

Visual Readability Score

PCH

1.00

Perceptual Cohesion

RTS

0.75

Readability Test Score

SRS

0.70

Scale Robustness Score

BRS

0.84

Blur Robustness Score

TCS

0.78

Target Contrast Stability

SDS

0.74

Stroke Durability Score

SFS

0.65

Silhouette Fidelity Score

NDS

1.00

Negative Detail Score

BBS

0.00

Bounding Box Balance

CPS

1.00

Compression Preservation

PDS

1.00

Pixel Density Suitability

ORS

0.65

Orientation Robustness

CAS

0.60

Color Accessibility Score

RRS

0.37

Referent Recognition Score

FAS

0.55

Functional Association Score

SOS

0.12

Semantic Obsolescence Score

CSS

0.01

Cultural Saturation Score

ERS

0.09

Evidence Reliability Score

MTS

0.27

Metaphor Transfer Score

TDS

0.18

Temporal Decay Score

GDS

0.17

Generational Divide Score

CLL

0.41

Convention Learning Load

NTR

0.51

Neurocognitive Transfer Risk

SPS

0.30

Symbol Persistence Score

OBS

0.19

Obsolescence Signal

CTS

0.00

Cohort Transfer Slope

[ RECOMMENDED NEXT ACTIONS ]

What Improves This Pictogram.

Action

Conduct representative user testing with diverse user groups to validate comprehension and reduce confusion risk before publication.

Action

Maintain visible text labels or tooltips alongside the icon until semantic transparency and user familiarity are demonstrably sufficient.

Action

Ensure consistent placement and contextual cues in the interface to support correct interpretation, mitigating confusion with similar icons such as generic network connection or authentication required symbols.

Action

Consider design refinements to improve silhouette fidelity and cultural recognition, potentially increasing cultural convergence and collective resonance scores.

Action

Monitor evolving user familiarity and cultural evidence over time to detect and address any semantic obsolescence or generational divides in comprehension.

[ Private testing / Admin invite ]

Request an invite for pictogram clarity screening.

Access stays invite-only during private testing.

Requests feed the admin invite queue.

Useful context helps select early pilots.