BrailleTap

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Information about BrailleTap

Published on June 12, 2008

Author: tjvguerreiro

Source: slideshare.net

Description

Details in:
http://m-accessibility.blogspot.com

Braille Tap is a text-entry method that uses blind users braille knowledge to provide texting abilities. However, in spite of demanding extra hardware, this new interface asks the user to "draw" the desired braille character.

This presentation was performed at DSAI 2007, in Vila Real.

Braille Matrix A new text-entry method for the blind Tiago Guerreiro [email_address]

‘‘ ’’ Never doubt that a small group of committed people can change the world. Indeed it is the only thing that ever has . — Margaret Mead

We have the whole world in our hands.

SMS have had an enormous growth in the last few years.

Mobile devices can do anything.

A common image for me.

What about the Others ?

Some can only see this.

 

They are too heavy .

They are too big .

They are too expensive ...

And definitely not mobile .

 

Can speech synthesis replace visual feedback ?

 

 

 

Despair and drop out.

 

User Observation

Survey users’ habits and capacities User characterization Mobile Device usage User Observation 12 Questionnaires

All dial numbers All have a cell phone 2 users stated difficulties with keypad Not a priority

60% of the users can send messages … but 80% have a Screen Reader Difficulties with menu navigation and.. ...voice feedback

Half the users use the contact list Memorize the contact position

T h e Goal Mobile Device Control for Blind Individuals

Design Guidelines

G1 communicate through available channels

G2 low cognitive load

G3 focus on acquired capabilities

G4 minimize stress scenarios

G5 adapt the interaction processes to the user

G6 allow and stimulate performance improvement

G7 available, adaptable and affordable

Calls Info Dial Accept Reject

SMS Write Read Send Receive

Contacts Calendar Notebook

Keep it Simple.

Braille Matrix Vowel Navigation

ABCDEFGHIJLMNOPQRSTUVXZ

A B C D E F G H I J L M N O P Q R S T U V X Z

A B C D E F G H I J L M N O P Q R S T U V X Z

A B C D E F G H I J L M N O P Q R S T U V X Z

A B C D E F G H I J L M N O P Q R S T U V X Z A BCD E FGH I JLMN O PQRST U VXZ

We can navigate in any direction.

A BCDEFGHIJLMNOPQRSTUVX Z

A B C D E F G H I J L M N O P Q R S T U V X Z

 

A B C D E F G H I J L M N O P Q R S T U V X Z

 

A B C D E F G H I J L M N O P Q R S T U V X Z

No wrong choices. Just shorter paths.

No memorization required.

 

(Almost) all mobile devices.

Braille Matrix A Q B R

 

 

Invert Space Delete Back Menu Go

Al a g e h i Automatic Word Finishing Letter Prediction System Context Dictionaires

NavTap DEMO VÍDEO http://www.youtube.com/watch?v=xbJ_qlFK5YQ

BrailleTap DEMO VÍDEO http://www.youtube.com/watch?v=-WME-zpZ5yc

Event Reception Message Translation Navigation Interaction Warnings How r u ? I m dat great. Wat do u want? C u l8 r

User Evaluation Vowel Navigation Method Raquel and Martin Sain Foundation Excellent learning curve compared with MultiTap Easy to learn

User Evaluation Braille Matrix Method Raquel and Martin Sain Foundation Better than Vowel Navigation for braille experts Requires Braille knowledge

Remarks All the users were satisfied Improved performance All succeeded Before BloNo: 40% weren’t able to write text Wrote text Managed Contacts Navigated menus

The Future Gestural Shortcuts Usability Issues Follow-up studies

 

Kevin Clarkson Martin Rotovnik

Braille Matrix A new text-entry method for the blind Tiago Guerreiro [email_address] t

 

 

Electromyographic Texting Mobile Device Control for Tetraplegics

Blobby Indoor Location and Orientation for the Blind

Mnemonical Body Shortcuts Body Space Gesture Recognition

EZ Control Environmental control for the disabled

CameraPhone Camera based interaction for the disabled

Braille Matrix A new text-entry method for the blind Tiago Guerreiro [email_address] t

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