There's a vast spectrum of various vision and hearing impairments. The severity of each possible impairment is also variable, and often a single person faces mu

There's a vast spectrum of various vision and hearing impairments. The severity of each possible impairment is also variable, and often a single person faces multiple types/severities of impairments. The end result is a lot of variables, too many combinations, and the need to customize solutions on a per-person basis. All health issues are extremely sensitive subjects, and the language used can be extremely important. Words like "deaf," "blind," and "disabled" are tough, really tough. They're tough to admit, tough to say, and tough to hear. I know people who insist on calling themselves "Hard of Hearing" (typically abbreviated "HoH") or "Hearing Impaired" rather than being called "deaf" --which they consider offensive. Others are really easy-going about the terms used, so yes, this is yet another variable. And again, some are willing to speak publicly about it, while others prefer to just quietly pretend to normal on the Internet like everyone else. You really need to add your email address to the 'about' section of your HN profile since many would only discuss it with you privately. As for ideas, I have more than a few. Some are hardware. Some are software. But none of them seem profitable from a business perspective. Accessibility is subject to the same market forces as everything else in the world. Given the dizzying number of possible combinations of types of impairments with many requiring customized solutions as well as the comparatively small number of disabled people, providing accessibility is often ignored. Even HN itself has major accessibility issues that prevent some people from using the site. Free ideas are generally worth what you pay for them, but here's one; a pin grid display. Imagine every pixel on a normal display as a pin that can be raised or lowered. You could "see" the screen with your fingertips. It would be a world's first. You'd make pictures accessible to the blind, along with text, fonts, and formatting (layout/design). With enough hardware, software, and mechanical engineering prowess, a pin grid display may now be possible to do, but it would be difficult. Just getting the raising and lowering of tightly packed pins right would take a lot of effort, but the idea can be expanded to include vibration, temperature, and possibly other tactile feedback. This is long enough for now, but yes, my email address is in my profile.