## Appendix A Questions of the Initial Questionnaire  
1. Gender: Male, female
2. Type of disability 1. Total visual 2. Partial visual 3. Total auditory 4. Partial auditory 5. Motor that directly affects interaction with the computer or device 6. Motor that does not directly affect interaction with the computer or device 7. Other disability 8. None 3. Please tell us if you are currently employed or in a professional activity 1. Not currently but I have no interest in seeking employment 2. Not currently but I have worked before and I am looking for a new job or activity. 3. I have not yet had a job or professional activity but I am looking for a job or activity 4. Yes 4. Total number of years of experience in your working or professional life 1. Integer number 5. Educational level 1. Primary education * [1] [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] A knowledge-based approach to user interface adaptation from preferences and for special needs. _User Model. User Adapt. Interact._**2017**, _27_, 445-491. [CrossRef]
* [2] [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] Effects of New Supportive Technologies for Blind and Deaf Engineering Students in Online Learning. _IEEE Trans. Educ._**2019**, _62_, 270-277. [CrossRef]
* [3] [PERSON]; [PERSON] Requirements for semantic educational recommender systems in formal e-learning scenarios. _Algorithms_**2011**, \(4\), 131-154. [CrossRef]
* [4] [PERSON]; [PERSON] User-centered design of a depth data based obstacle detection and avoidance system for the visually impaired. _Hum-Centric Comput. Inf. Sci._**2018**, \(8\), 14. [CrossRef]
* [5]_ISO 9241-171:2008_; Ergonomics of Human-System Interaction--Part 171 Guidance on Software Accessibility. International Standard Organization: Geneve, Switzerland, 2018. * [6] W3C. Web Accessibility Initiative (WAI). Available online: [[https://www.w3.org/WAI/](https://www.w3.org/WAI/)]([https://www.w3.org/WAI/](https://www.w3.org/WAI/)) (accessed on 13 September 2018). G3 ict. Global Iniatitive for Inclusive Information and Communication Technologies. Available online: [[https://dig.watch/actors/global-initiative-inclusive-information-and-communication-technologies](https://dig.watch/actors/global-initiative-inclusive-information-and-communication-technologies)]([https://dig.watch/actors/global-initiative-inclusive-information-and-communication-technologies](https://dig.watch/actors/global-initiative-inclusive-information-and-communication-technologies)) (accessed on 20 September 2018). * IMS Global Learning Consortium Accessibility. Available online: [[http://www.imsglobal.org/activity/accessibility](http://www.imsglobal.org/activity/accessibility)]([http://www.imsglobal.org/activity/accessibility](http://www.imsglobal.org/activity/accessibility)) (accessed on 13 September 2018). * IMS Global Learning Consortium (2012) IMS Global Learning Consortium. IMS AccessForAll v3.0 Public Draft Specification. 2012. Available online: [[http://www.imsglobal.org/accessibility/#afav3](http://www.imsglobal.org/accessibility/#afav3)]([http://www.imsglobal.org/accessibility/#afav3](http://www.imsglobal.org/accessibility/#afav3)) (accessed on 17 November 2018). * ISO/IEC 24751-1-2-3 (2008); Information Technology--Individualized Adaptability and Accessibility in e-Learning Education and Training. International Standard Organization: Geneve, Switzerland, 2018. * W3C. Media Accessibility User Requirements. Available online: [[http://w3c.github.io/apa/media-accessibility-reqs/](http://w3c.github.io/apa/media-accessibility-reqs/)]([http://w3c.github.io/apa/media-accessibility-reqs/](http://w3c.github.io/apa/media-accessibility-reqs/)) (accessed on 3 February 2020). * [PERSON] (2001) [PERSON] An Extended Time in a Testing Situation for People Who are Blind and Visually Impaired: Time Variable and Other Variables Affecting an Outcome of Students with Visual Impairment. _Vis. Impair._**2001**, _17_, 123-136. * [PERSON] et al. (2013) [PERSON]; [PERSON]; [PERSON] A framework to integrate speech based interface for blind web users on the websites of public interest.