If there's one thing we can be certain of, it's that mainstream technology is largely targeted toward an able-bodied demographic. Smartphones and tablets are among the most popular of these devices, and are regularly used by people around the globe. As a quad-amputee, I can't use a phone in a conventional fashion. There are a lot of people with disabilities that have this in common. While most people use their fingers to access their devices, we use our lips, our arms, our feet, and even our noses.