ACCESSIBLE Harmonized Methodology
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The document describes a Harmonized Methodology (HAM) that was created to improve accessibility in software development. The HAM provides a standardized approach for assessing accessibility across different types of applications. It correlates various components related to accessibility, such as disability types, guidelines, assistive technologies, and more. The goal of the HAM is to assist developers in making applications accessible at all stages of the development process.
ACCESSIBLE Harmonized Methodology
- 1. ACCESSIBLE harmonized methodology Chalkia Eleni CERTH/HIT
- 2. Harmonized Methodology (HAM) Objective: Implementation of a harmonized accessibility methodological approach applied to software development and design of accessible new applications and services. Assist developers through all steps of the development lifecycle. 10 ACCESSIBLE Workshop, 13th July 2010 1 9 8 7 6 11 12 13 14 2 3 4 5
- 3. HAM overview HAM components Disability and user groups. ICF Classification. Interaction limitations. Assistive technologies. Accessibility standards & guidelines. ACCESSIBLE Workshop, 13th July 2010
- 4. HAM components Disability and user groups There are as yet no universally accepted categorizations of disability, despite efforts towards that goal . HAM is based on the user groups that have been realised in at the duration of the project . ICF classification mapping ICF provides a concrete classification of impairments of the body structures, which ensures no overlapping . ACCESSIBLE Workshop, 13th July 2010
- 5. HAM components Interaction limitations mapping Based upon an adaptation of the “Barrier Walkthrough” methodology. Focus on the barriers instead of the accessibility principles. A barrier is any condition that hinders the user's progress towards achievement of a goal, when the user is a disabled person . Identification of all possible barriers. Explanation of the functional limitations that derive form each disability type and sub-type. Presentation of the points that should be checked in order to cover all possible dysfunction of a disability type. ACCESSIBLE Workshop, 13th July 2010
- 6. HAM components Correlation of the interaction limitations and disability types We mapped the disability types with the interaction limitations. Assistive technologies mapping Description of the correlation between specific disability type and existing ICT user technologies, including assistive technologies. ACCESSIBLE Workshop, 13th July 2010 AT Category Description Disability (ies) Assistive Listening Devices Hearing Aid Telephone Interconnect System used with in the ear and behind the ear hearing aids. Hearing impairments
- 7. HAM components Accessibility guidelines AREA A : Web Content WCAG 2.0 (W3C) Section 508 AREA B : Mobile-Web applications MAG (ACCESSIBLE) AREA C : Web Services Web services guidelines (ACCESSIBLE) AREA D : Description languages Description languages guidelines (ACCESSIBLE) ACCESSIBLE Workshop, 13th July 2010
- 8. AREA A: Web content WCAG 2.0 12 guidelines organized under 4 principles. P erceivable O perable U nderstandable R obust Priority 1 (Level A) Priority 2 (Level AA) Priority 3 (Level AAA) Section 508 HAM design guidance ACCESSIBLE Workshop, 13th July 2010 Absolute barriers Must be satisfied Significant barriers Should be satisfied Provide additional accessibility support Improve access to Web documents if satisfied
- 9. HAM design guidance Mapping Web content guidelines to Disabilities Based on the Barrier Walkthrough Methodology W3C unofficial documents ACCESSIBLE Workshop, 13th July 2010
- 10. AREA B: Mobile-Web Applications Accessible mobile applications: accessible applications and mobile applications. General-purpose usability guidelines applied to the mobile applications domain. Mobile Web applications guidelines . W3C Mobile Web Best Practices (MWBP) The two level structure narrows MWBP into a subset of checkpoints that are machine verifiable, called MobileOK Basic Tests. The checkpoints are aligned into 5 Best Practice Headings akin to WCAG 2.0 POUR. Mapping Mobile-Web Application Guidelines to Disabilities Define Mobile Accessibility Guidelines (MAG) with a three-step methodology. 1 st STEP mapping between MWBP and WCAG (either v1.0 or v2.0). 2 nd STEP leverage this mapping to associate MWBP to disabilities. 3 nd STEP define a subset of MWBP checkpoints that can be applied to non-Web scenarios. HAM design guidance ACCESSIBLE Workshop, 13th July 2010
- 11. Mapping Web services to Disabilities Follow the instructions of the web applications disability mapping and the interaction limitations. In complement with the WCAG mapping the superset of checkpoints that have to be checked in the context of web Accessibility is settled. HAM design guidance “ in-Level” categorization. Mandatory guidelines (e.g. L1m). Not Mandatory guidelines (e.g. L2). AREA C: Web Services Three accessibility layers form the basis for the Accessible Web Service accessibility evaluation. ACCESSIBLE Workshop, 13th July 2010
- 12. AREA D: Description languages The application must be able to process the user inputs and providing them with appropriate output content. 2 layers form the basis for the Accessible SDL application evaluation . Basic accessibility layer. Extended accessibility layer . A set of techniques that can be used to check whether an already developed SDL application belongs to a specific class were defined. Mapping Description languages to Disabilities According to the web applications disability mapping and the interaction limitations. HAM design guidance ACCESSIBLE Workshop, 13th July 2010 Disability Type Guideline Main Type Subtype SDL Hearing impairments Conductive Hearing Loss 10, 18, 19 Sensorineural Hearing Loss 10, 18, 19 Mixed Hearing Loss 10, 18, 19 Deaf-blindness 10, 18, 19 Deafness 10, 18, 19
- 13. ACCESSIBLE best practice catalogue HAM outcome Best Practices Catalogue Defines universal objective accessibility assessment metrics. Two sections. Correlation of the ACCESSIBLE components. Disability type. ICF classification. Functional limitations. Assistive technologies. Accessibility guidelines. Methodological framework for the ACCESSIBLE optimum qualitative metric for measuring accessibility. Literature review. SoA methodologies. Adaptation of the optimum metric to ACCESSIBLE needs. Best practices catalogue Accessibility score ACCESSIBLE Workshop, 13th July 2010
- 14. ACCESSIBLE accessibility metric Level of conformance and Indicator of conformance will be available to the developers and the users too. Level of compliance and list of guidelines will be available to the developers only. Accessibility score ACCESSIBLE Workshop, 13th July 2010
- 15. Innovation & added value Innovation Major step in software development products accessibility. New concise and integral methodology for assessing different software application types and their level of accessibility, with established or under development guidelines. Correlation of all the components that are related to accessibility for people with disabilities and linking with the core of the ACCESSIBLE HAM, the disability type and the ICF classification. Foreseen added value Ability of extension of the HAM in wide range of application areas (web applications, web services, mobile web, SDL). Generic oriented methodology able to be adapted in other areas and include new guidelines. ACCESSIBLE Workshop, 13th July 2010