[albert_e]

I need a variation of this that can be strapped to hand and used with a couple fingers while still leaving the hand and fingers mostly free for normal natural fuction.

also integrate push-to-talk for voice inputs.

use case is to use it while standing up and moving about -- with a large display screen at a distance. Or my specific interest -- work for extended time on a treadmill.

[stamps]

Twiddler is probably the closest thing I can think of that meets those requirements off the shelf.

https://www.mytwiddler.com/

[bigyabai]

Consider a trackball. I got a Kensington Expert Wireless a while back and really recommend it if you prefer to keep your wrists somewhere static.

[ornornor]

Ploopy does make trackballs. I have an adept and it’s great. Inexpensive too.

[jimmySixDOF]

Unfortunately drag-scroll is not in enough places to make this work without a dedicated wheel but I do have an eye on these

[ornornor]

I have mine configured so that pressing the fourth button and moving the ball acts as a scroll wheel, no need for any special support is OS/apps. It shows as a scroll wheel input.

[dfxm12]

I think the strongest selling point of Ploopy products is their open design. You are free to build this variation yourself.