The other day I was thinking what are some of the ways a person with dexterity issues, would be able to use a camera? Everyone has a different dexterity issue. Therefore, there has to be a way they could control the shutter speed, F-stop, ISO, and Shutter release. With one finger or maybe a stylus pen.
Well there is, in facked, there are many ways. For explanation purposes, I will be using the Nikon D5600 and software called Snapbridge for my example. Snapbridge comes in android and os versions. Depending on the brand and model of your camera, there is software out there to control your camera. It's just a matter of searching the internet for it or talking to other photographers. Perhaps down the road, I can compile a list of different cameras and apps.
With Snapbridge you have the option of using your cellphone or a tablet to control your camera, and when it comes to holding the cellphone/tablet. There are so many options out there when it comes to brackets and holders, the sky is the limits. And if it's not out there, it can be made.
Below you will find a link to all types of brackets to hold tablets and a link to Snapbridge software for Nikon.