Motor/Mobility: Voice recognition software, touch screens, head/mouth wands, special switches, keyboard overlays, one-handed keyboards, oversized mouse or trackball are some of the tools a user with limited mobility may use, but for testers, all you’ll need is a traditional keyboard to test. Ensure that there is a logical tab order (left to right, top to bottom) and provide logical and standard keyboard commands. Tab through the site and visually see if the tabbing order is logical (usually known as OnFocus). If an element is skipped or the tabbing order doesn’t make sense to you as a tester, that could possibly be an issue of ADA compliance.
Starting January 18, 2018, that 12-month clock runs out and to be ADA compliant you need to have your website compliant with WCAG 2.0 A/AA standards. All federal websites must meet compliance with all items in WCAG 2.0 AA by this time. This is not entirely a new requirement as the Department of Justice (DOJ), which enforces the ADA, issued preliminary rules back in 2010. However, the DOJ is now expected to enforce updates to Section 508 that was approved back in January 2017. Please note that WCAG 2.0 AA guidelines are endorsed by DOJ and these guidelines combined with Section 508 Standards are now recognized as the baseline requirements for website accessibility and expected to be used by the DOJ as a benchmark in settling website accessibility matters.
Decided by the US Supreme Court in 2002, this case [74][75] held that even requests for accommodation that might seem reasonable on their face, e.g., a transfer to a different position, can be rendered unreasonable because it would require a violation of the company's seniority system. While the court held that, in general, a violation of a seniority system renders an otherwise reasonable accommodation unreasonable, a plaintiff can present evidence that, despite the seniority system, the accommodation is reasonable in the specific case at hand, e.g., the plaintiff could offer evidence that the seniority system is so often disregarded that another exception wouldn't make a difference.

Automated testing is the first step toward determining if your website is accessible to people with disabilities, including those using assistive technologies like screen readers, screen magnifiers, switch controls, and others. The free testing tools on this website will give you an idea of whether your website is compliant with laws like Section 508, the Americans with Disabilities Act (ADA), and the 21st Century Communications and Video Accessibility Act. If you find you have many violations, Level Access has experts that can help you reduce your legal risk.
Level AA is a little more significant, and makes sites accessible to people with a wider range of disabilities, including the most common barriers to use. It won't impact the look and feel of the site as much as Level AAA compliance, though it does include guidance on color contrast and error identification. Most businesses should be aiming for Level AA conformity, and it appears to reflect the level of accessibility the DOJ expects. 
State and local governments will often post documents on their websites using Portable Document Format (PDF). But PDF documents, or those in other image based formats, are often not accessible to blind people who use screen readers and people with low vision who use text enlargement programs or different color and font settings to read computer displays.
In addition, aids and services include a wide variety of technologies including 1) assistive listening systems and devices; 2) open captioning, closed captioning, real-time captioning, and closed caption decoders and devices; 3) telephone handset amplifiers, hearing-aid compatible telephones, text telephones (TTYs) , videophones, captioned telephones, and other voice, text, and video-based telecommunications products; 4) videotext displays; 5) screen reader software, magnification software, and optical readers; 6) video description and secondary auditory programming (SAP) devices that pick up video-described audio feeds for television programs; 7) accessibility features in electronic documents and other electronic and information technology that is accessible (either independently or through assistive technology such as screen readers) .
A. It depends. The ADA makes a distinction between psychiatric service animals and emotional support animals. If the dog has been trained to sense that an anxiety attack is about to happen and take a specific action to help avoid the attack or lessen its impact, that would qualify as a service animal. However, if the dog's mere presence provides comfort, that would not be considered a service animal under the ADA.
ADA disabilities include both mental and physical medical conditions. A condition does not need to be severe or permanent to be a disability.[6] Equal Employment Opportunity Commission regulations provide a list of conditions that should easily be concluded to be disabilities: deafness, blindness, an intellectual disability (formerly termed mental retardation), partially or completely missing limbs or mobility impairments requiring the use of a wheelchair, autism, cancer, cerebral palsy, diabetes, epilepsy, Human Immunodeficiency Virus (HIV) infection, multiple sclerosis, muscular dystrophy, major depressive disorder, bipolar disorder, post-traumatic stress disorder, obsessive compulsive disorder, and schizophrenia.[7] Other mental or physical health conditions also may be disabilities, depending on what the individual's symptoms would be in the absence of "mitigating measures" (medication, therapy, assistive devices, or other means of restoring function), during an "active episode" of the condition (if the condition is episodic).[7]
No, you control who has access to your information — and participating organizations are not allowed access without your authorization. When completing your CAQH ProView profile, you will be asked to select which dental plans and other participating organizations you give authorization to access your data. Only the plans you’ve chosen will have access to your information.