How to Design Mobile Apps for One-Hand Usage
One of my family members has only one hand, the left.<p>They would love to have a camera on hand to capture spontaneous moments around their young children. 
But choosing a smartphone is a compromise between buying a low-level phone that is small enough to be operated with one hand, normally leaving you with a terrible camera, or one with a decent(-ish) camera that is a pain/impossible to use day to day due to the screen size.<p>BTW just using a camera on a smartphone with one hand is no joke; the trigger buttons generally assume a right-handed or two-handed hold. You can test this by operating your phone with your right hand held behind your back.<p>I'd love to see more UI designs that take into account that some people have non-standard configurations.