- From: SALES, TERRY LYNN <TERRYLYNN.SALES@cbp.dhs.gov>
- Date: Thu, 14 Aug 2014 21:09:24 +0000
- To: "'bryan.garaventa@whatsock.com'" <bryan.garaventa@whatsock.com>, "'w3c-wai-ig@w3.org'" <w3c-wai-ig@w3.org>
- Message-ID: <CD6739563257E640956C81ABE78DD0916238779A@D2ASEPREA011>
Ba dump bump. From: Bryan Garaventa [mailto:bryan.garaventa@whatsock.com] Sent: Thursday, August 14, 2014 03:58 PM Eastern Standard Time To: w3c-wai-ig@w3.org <w3c-wai-ig@w3.org> Subject: For you: A webpage that is 100% accessible to all people around the world, regardless of nationality or disability or Assistive Technology Recently, somebody asked me to show them a website that was 100% accessible, so I figured it would make a good experiment. Sort of a thought experiment I guess... So I built a webpage that is 100% accessible to all people in the world equally, regardless of nationality, disability type, or Assistive Technology used. Enjoy! It's available at http://whatsock.com/test/100_percent_accessible.htm Happy testing. With this 100% accessible baseline to start from, the accessibility percentage for all web technologies everywhere, scales downward to account for requisite variables, so that no web technology anywhere can be 100% accessible as a result. To demonstrate this, I also wrote the following algorithm, that calculates the general percentage of accessibility for any given web technology. X = (1 * Disability-Type * Browser-AT * Site-Interactivity * Site-Complexity * User-Experience) P = (Hardware * ((((1 * OS-AT) - X) * Accessibility-Level) + X)) * 100 P is the general Percentage of accessibility calculated for a particular website or web technology feature, which is based on the following estimated values for each variable in the formula. Disability-Type 0.01: Deaf-Blind + Motor-Impaired 0.1: Deaf-Blind 0.2: Deaf + Motor-Impaired 0.3: Blind + Motor-Impaired 0.4: Partially Sighted + Motor-Impaired 0.5: Motor-Impaired 0.6: Blind 0.7: Deaf + Partially Sighted 0.8: Partially Sighted 0.9: Deaf Browser-AT 1: No AT 0.98: Internet Explorer + JAWS 0.93: Internet Explorer + NVDA 0.95: Firefox + JAWS 0.98: Firefox + NVDA 0.95: Safari + VoiceOver 0.6: Chrome + JAWS 0.7: Chrome + NVDA 0.95: Internet Explorer or Firefox or Chrome + Dragon 0.98: Internet Explorer or Firefox or Chrome + ZoomText 0.9: Internet Explorer or Firefox or Chrome or Safari + Braille Display Site-Interactivity 1: Contains All Static Elements 0.9: Contains Interactive Features Site-Complexity 1: Simple 0.95: Medium 0.9: Complex User-Experience 1: Advanced 0.95: Intermediate 0.9: Beginner Hardware 0: None 1: Computer OS-AT 0.001: No AT 0.99: Windows + JAWS 0.99: Windows + NVDA 0.99: Windows + Dragon 0.99: Windows + ZoomText 0.99: iOS + VoiceOver 0.99: OS X + VoiceOver 0.9: Windows or iOS or OS X + Braille Display Accessibility-Level 0.98: Fully Keyboard Accessible + ARIA Standards Compliant (when applicable) + WCAG Compliant 0.3: Fully Keyboard Accessible + ARIA Standards Compliant (when applicable) but not WCAG Compliant 0.3: Fully Keyboard Accessible but not ARIA Standards Compliant (when applicable) + WCAG Compliant 0.2: Fully Keyboard Accessible but not ARIA Standards Compliant (when applicable) nor WCAG Compliant 0.1: ARIA Standards Compliant (when applicable) but not Fully Keyboard Accessible nor WCAG Compliant 0.01: Neither Fully Keyboard Accessible nor ARIA Standards Compliant (when applicable) nor WCAG Compliant (More constants can always be added or adjusted) For example: (1 * .6 * .95 * .9 * .9 * .9) = 0.41553 (1 * ((((1 * 0.99) - 0.41553) * .98) + 0.41553)) * 100 = 97.85106 So roughly calculated, a Blind person(.6) using Safari+VoiceOver(.95) accessing a website that Contains Interactive Features(.9) that is Complex(.9) when the user is a Beginner(.9), in combination with Hardware(1) that includes iOS+VoiceOver(.99), upon a website that is Fully Keyboard Accessible + ARIA Standards Compliant (when applicable) + WCAG Compliant(.98), will have a general accessibility Percentage of 97.8. Like I said, these are just estimates, but I thought it would make an interesting experiment. Best wishes, Bryan
Received on Thursday, 14 August 2014 21:10:41 UTC