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Accessibility to
mobile interfaces
for older people
Jose-Manuel D��az-Bossini, Lourdes Moreno
Labda Group,
Computer Science and Engineering Department
Universidad Carlos III de Madrid
Vigo, 13 November 2013

Contents
? Introduction and Motivation
? Background
? Proposal
? Conclusions and Future Work
2

Introduction and Motivation
? Exponential growth of the elderly population
that suffers from age-related disabilities
? This problem will be even bigger when
middle-age population becomes the new
elderly population.
? New technologies and devices evolves faster
than accessibility issues are addressed
3

Background
? Accessibility and older people
? There is a lack of accessibility guidelines in
the mobile applications context: literature,
best practices and guidelines.
? W3C is working on providing guidance to
apply its Web Content Accessibility Guidelines
(WCAG) via the Mobile Web Application Best
Practices (MWABP) and Mobile Web Best
Practices (MWBP) 4

Proposal
? A set of guidelines to keep in mind in order
to achieve accessibility in mobile interfaces
for older people.
? An accessibility study of three mobile native
Apps on android that modify the default
interface for another more accessible one.
5

Proposal
Accessibility guidelines
? Accessibility guidelines of mobile Apps for the
elderly
? We propose an Accesibility Checklist for mobile
Apps for the elderly : set of 17 checkpoints
collected from 3 source research works:
�� World Wide Web Consortium (W3C) guidelines.
�� Android Accessibility Practices.
�� Age-centered Research-Based Design Guidelines
(2005, Panayiotis, Z. et al.)
6

Proposal
�� W3C criteria (7 criteria):
? Providing a text equivalent for every non-text
element
? Use clear and simple language
? Do not create periodically auto-refreshing
pages, unless you have informed the user and
provided a means of stopping it
7

Proposal
�� Android Accessibility Practices (4 criteria)
? Add descriptive text to user interface controls
? Audio prompts accompanied by another visual
prompt or notification
�� Age-centered Research-Based Design
Guidelines (6 categories)
? Provide larger targets
? Provide ample time to read information
? Highlight important information
8

Proposal
An accessibility study of mobile Apps
? EXPERIMENTAL DESIGN
1. Object of study:
? An accessibility evaluation of 3 mobile native Apps
that modify the default interface, turning it into a
more accessible and friendly one for elderly
people
2. Experiment Context
? Nexus 4 Smartphone with Android 4.2.2.
? TalkBack services
? Explore by Touch system feature
9

Fontrillo Mobile
Proposal
Big Launcher
10
Accessibility for
Android
3. Sample Apps:

Proposal
4. Study parameters
? Accessibility Checklist
5. Evaluation method
? Each checkpoint was manually tested and
pointed between 1 and 5.
? The final result is the average between them.
11

Analysis and Results
CHECKPOINT BIG LAUNCHER FONTRILLO THE MOBILE ACCESSIBILITY FOR
ANDROID
W3CP001 5 5 5
W3CP002 5 2 4
W3CO001 2 2 5
W3CO002 3 4 4
W3CU001 5 5 4
W3CU002 4 3 4
W3CO003 4 5 4
Android001 5 2 5
Android002 3 3 3
Android003 4 3 4
Android004 5 3 3
WDG-TD 5 5 2
WDG-UG 5 4 2
WDG-BWF 2 2 2
WDG-CLD 4 4 2
WDG-UCD 5 4 3
WDG-UCB 4 5 3
Final Score 4,11 3,58 3,47 12
Proposal

13
Proposal
? Summary and Interpretation of Findings
? The results of study indicate Big Launcher is the
most accessible for older people of the three
applications.
? In the medium term, we��ve got Frontillo. It
accomplish with many of the criteria established.
? The accessibility for Android App is a good
application but it focuses mainly on blind people,
so it��s not the best option for older people.

Conclusions
? From this study, we provide:
? A checklist of accessibility guidelines to evaluate mobile
Apps for elderly people
? Evaluation of three mobile native Apps that modify the
default interface, turning it into a more accessible for
elderly people
? Apps should be accessible in order to prevent social
exclusion and to encourage the access of elderly and
disabled people to the technologies
? Accessibility requirements should be addressed early
on the design phase in the development process.
? Future work
14

15
Jose-Manuel D��az-Bossini, Lourdes Moreno
Universidad Carlos III de Madrid
THANK YOU FOR YOUR ATTENTION

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Accessibility to mobile interfaces for older people

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Editor's Notes