c. Features and benefits necessary to achieve the user’s goals
Completeness of features:
Make sure the entire range of mouse functions are covered – moving pointer, clicking, dragging and scrolling.
Do you already use certain solutions but looking to complement them with a hands-free mouse? E.g. you are able to move the mouse reasonably, but now looking for a clicking, dragging, scrolling solution because you cannot use the buttons on the mouse? Or vice versa?
Ease of acquiring and trying the solution
How quickly can you acquire the solution?
Is it free to try? How long is the trial?
Convenience of installation and setup
Do you need any hardware widgets to be mounted / installed near the computer or on your wheelchair?
Do you need any gear to be worn on your body? If so, would you need a caregiver to help you wear it? What type of adjustments are needed to make sure it fits you well?
What settings need to be adjusted on the gear itself that will need help from a caregiver?
Ease of Use during operation:
Is the system easy to learn?
Is it reactive to your needs? E.g. Does the mouse pointer move easily, predictably and precisely based on your body motions? Does it click when you want it to? Are the functions achievable in a minimum number of actions, or does the system introduce additional steps to achieving compared to a standard mouse?
Does the system lead to unintentional results (such as unintentional clicks with dwell clicking), which you have to correct by doing additional work?
Are you able to completely operate the system independently, including various settings adjustments, without needing help from someone else?
If the system involves wearables, how many minutes or hours at a stretch can you comfortably wear it or use it?
Flexibility
Does the system play well with other tools which you may already have? E.g., you may already have some switches for mouse clicks, but now are looking for a mouse pointing solution? Or, you may already have voice control working well for typing and clicking but need a mouse pointing solution? How quickly can you switch between the two?
