Evaluating Web Accessibility For Specific Mobile Devices

Evaluating Web Accessibility for Specific Mobile Devices Markel Vigo , A. Aizpurua, M. Arrue and J. Abascal Laboratory of HCI for Special Needs International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 University of the Basque Country

Introduction International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 ,[object Object],[object Object],[object Object],[object Object],[object Object],Guidelines Architecture Case Study Conclusions Introduction

Mobile Web vs Web Accessibility International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 Guidelines Architecture Case Study Conclusions Introduction Mobile Web Web accessibility Small display size causes disorientation on the user Lack of context disorientates visually impaired users Lack of pointing device forces users to use keyboards. Navigation is slowed down Screen reader users suffer information overload : navigation bars and menus. Typing is a tedious task due to low text input rate Users with motor disabilities face analogous problems Due to low bandwidth images tend to not to be loaded Not providing alternatives for visual content raises accessibility barriers Lack of colour support may cause information loss Information conveyed with colour causes problems to colour-blind users Lack of support causes information loss Assistive technologies tend to have problems with newer technologies

Guidelines International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 ,[object Object],[object Object],[object Object],[object Object],[object Object],Usable screen width : 120px minimum Mark-up language support: XHTML Basic 1.1 Character-encoding: UTF-8 256 colours minimum CSS level 1 support Scripting is not supported Guidelines Architecture Case Study Conclusions Introduction

Guidelines & Evaluation International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 ,[object Object],Guidelines Architecture Case Study Conclusions Introduction TAW MWI ready.mobi EvalAccess MOBILE

Guidelines & Evaluation International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 ,[object Object],[object Object],[object Object],[object Object],[object Object],Guidelines Architecture Case Study Conclusions Introduction

Guidelines & Evaluation International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 ,[object Object],[object Object],[object Object],Guidelines Architecture Case Study Conclusions Introduction

Architecture: overview International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 ,[object Object],[object Object],[object Object],Device-Tailored Evaluation Device-tailored Report Guidelines Architecture Case Study Conclusions Introduction Mobile Device’s brand name and model

Source Code Retriever International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 ,[object Object],[object Object],Source Code Retriever XHTML file WWW ,[object Object],Guidelines Architecture Case Study Conclusions Introduction

Device Information Retriever International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Guidelines Architecture Case Study Conclusions Introduction CC/PP file Device Information Retriever Jena WURLF API WURLF profiles UAPRof profiles

Extending mobileOK Basic tests International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Guidelines Architecture Case Study Conclusions Introduction

Guidelines Instantiator International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 ,[object Object],[object Object],[object Object],[object Object],XQUERY tests mobileOK tests CC/PP file Guidelines Instantiator Guidelines Architecture Case Study Conclusions Introduction

Guidelines Instantiator International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 ,[object Object],XQUERY tests mobileOK tests CC/PP file Guidelines Instantiator <access:pntSupport > true </access:pntSupport> <test_case id="8"> <evaluation_type>auto</evaluation_type> <evaluation_result>error</evaluation_result> <profile_feature type=" access:pntSupport "/> <value> </value> <element> <label>OBJECT</label> <test_elem>check attribute</test_elem> <related_attribute> <atb>ismap</atb> </related_attribute> </element> </test_case> CC/PP excerpt UGL excerpt let $tmp:=web_doc.xml//OBJECT[@ismap] return if(not( ))then for $i in $tmp return <error>{$i/@line, $i/name()}</error> XQUERY test true true Guidelines Architecture Case Study Conclusions Introduction

Evaluation Engine International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 ,[object Object],[object Object],[object Object],[object Object],[object Object],Evaluation Engine Evaluation Report XQUERY tests mobileOK tests CC/PP file Device Information Retriever Guidelines Instantiator Jena WURLF API WURFL profiles UAPRof profiles ,[object Object],Guidelines Architecture Case Study Conclusions Introduction Source Code Retriever XHTML file WWW

Case Study International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 ,[object Object],[object Object],[object Object],[object Object],Guidelines Architecture Case Study Conclusions Introduction mobileOK Basic Specific Evaluations for mobileOK Basic D 1 , D 2 , D 3 D 1 D 2 D 3 www.google.com 4 4 4 4 www.youtube.com 3 2 3 2 www.flickr.com 4 4 5 4 www.amazon.com 9 10 9 9 www.gmail.com 9 5 9 5 www.facebook.com 7 7 6 6 m.yahoo.com 6 6 6 6 m.twitter.com 8 6 8 6 www.wikipedia.org 428 363 358 280

Case Study International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 ,[object Object],[object Object],[object Object],[object Object],Guidelines Architecture Case Study Conclusions Introduction

Last remarks International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 ,[object Object],[object Object],[object Object],[object Object],[object Object],Guidelines Architecture Case Study Conclusions Introduction

Conclusions & Future Work International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Guidelines Architecture Case Study Conclusions Introduction

Evaluating Web Accessibility for Specific Mobile Devices Markel Vigo , A. Aizpurua, M. Arrue and J. Abascal Laboratory of HCI for Special Needs International Cross-Disciplinary Conference on Web Accessibility, W4A 2008 University of the Basque Country Any question?

Evaluating Web Accessibility For Specific Mobile Devices

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Evaluating Web Accessibility For Specific Mobile Devices