Krajnc E., Feiner J., Schmidt S.

Take out your mobile phone,

dial a number,

but imagine you are blind.

Krajnc E., Feiner J., Schmidt S.

User Centered Interaction Designfor Mobile ApplicationsFocused on Visually Impaired and Blind People

Elmar Krajnc, Johannes Feiner, Stefan SchmidtUSAB 2010, 4.-5. November 2010, Klagenfurt

Krajnc E., Feiner J., Schmidt S.

Project Ways4all

� Routing and way finding

� Indoor navigation

� Communication with public transport

� Integration in one device, a mobile phone

� This paper: a barrier free UI

Krajnc E., Feiner J., Schmidt S.

User Centered Design

� Know your user

� Survey

� Interviews

� Personas

Krajnc E., Feiner J., Schmidt S.

User Centered Design

� Result - concept for a user interface

� Textual interface

� Simple menus

� No extra screen reader

Krajnc E., Feiner J., Schmidt S.

Prototyping

� Review withexperts

� Iteration of the UI design

Krajnc E., Feiner J., Schmidt S.

Implementation of the application

� Java ME platform

� Screen reader Talks

� First Results and problems

� Wrong UI components

� Not everything is read by a screen reader

Krajnc E., Feiner J., Schmidt S.

Usability Engineering

� Expert reviews

� Usability testing

Krajnc E., Feiner J., Schmidt S.

Refactoring of the UI

� Simplify the user input

� Every text information has to be readable

� Using High Level APIElements

Krajnc E., Feiner J., Schmidt S.

Outlook

� SW Development is in progress

� New features

� Integration UI

� More reviews and tests

� Converting to other platforms like Android

Krajnc E., Feiner J., Schmidt S.

Conclusion

� Developing for special user groups is challenging

� Know your user

� Use iterative interaction design to build a better mobile application

Krajnc E., Feiner J., Schmidt S.

Thanks for your Attention

Elmar Krajncelmar.krajnc@fh-joanneum.at

Johannes Feinerjohannes.feiner@fh-joanneum.at

Stefan Schmidt stefan.schmidt.ITM07@fh-joanneum.at

FH JOANNEUMUniversity of Applied Sciences

www.fh-joanneum.at/itm