Details in:
http://m-accessibility.blogspot.com
This presentation focus on mobile accessibility for blind users. It presents a new text-entry method based on voice feedback and an alphabet navigation mechanism. It was presented at HCII 2007 in Beijing, PR China (July 2007).
The demonstration video is available in http://www.youtube.com/watch?v=xbJ_qlFK5YQ
59. User Evaluation Visually Impaired Foundation Five Totally Blind Users Braille Manual Six Different Tasks
60. 1 st Perdi o Autocarro e não vou chegar a horas. All users Succeeded 2 Words per Minute 1.4 Error / User 5.4 Keystrokes per character
61. 2 nd Perdi o Autocarro e não vou chegar a horas. All users Succeeded 10% Time reduction 1 Error / User 4.7 Keystrokes per character With Automatic Word Finishing
62. 1 2 3 4 5 50 100 150 200 250 300 Simple AWF Number of key presses
63. 3 rd Adding the contact Tiago Silva. All users Succeeded 125 Seconds / User 0,25 Error / User
64. 4 th Adding the contact Tiago Silva. All users Succeeded 84,5 Seconds / User 0 Error / User With Automatic Word Finishing
65. 5 th Adding the contact Tiago Silva. All users Succeeded 75,25 Seconds / User 0 Error / User With Automatic Word Finishing and Task-Aware Dictionary
67. 6 th Write the message ‘sim’ and send it to Paulo Lagoá. All users Succeeded 104 Seconds average Time includes letter acceptance and menu feedback All used AWF to select contact
68. Other Remarks All the users were satisfied Improved performance All succeeded Before BloNo: 50% weren’t able to write text Wrote text Managed Contacts Navigated menus