CAPTCHAs are widely used by websites for security and privacy purposes. However, text or image-based CAPTCHAs are not suitable for individuals with visual impairments. Audio CAPTCHAs were introduced as an accessible alternative for those unable to use the more common visual CAPTCHAs, but anecdotal accounts have suggested that they may be more difficult to solve. We propose an audio CAPTCHA called SAUT CAPTCHA designed for visually impaired web users, which presents audio-based challenge in which the user has to recognize a word from specific voice type (male, female, child or old) and to read out specific word........
The performance result shows that the success rate of SAUT CAPTCHA reaches approximately 98%.
Disclaimer In his capacity as the website owner and because of the full permissions that he has, all of the contents of the faculty member’s website including texts, images, researches and any other media are his responsibility. Therefore, the university disclaim any responsibility on this regard.
Copyright © Deanship of IT & Distance Learning 2012, 1433 H