Stage setup before changing the routine
Use this order: use it for short sessions, match pointer speed to the new leverage, keep the elbow near the body, and compare symptoms over a return-window period. Complete the first setup while there is time to read, observe, and reverse decisions. Add one device, user, animal, automation, accessory, or workflow step at a time so the cause of a failure remains visible.
Put hand size and grip angle and button reach and thumb support into the setup checklist
Verify hand size and grip angle and button reach and thumb support for the selected vertical mice in the real environment and record the result. The routine should not depend on remembering a hidden app state, unsupported adapter, special handling step, or unlabelled configuration that another household member cannot recover.
Design daily use around pointer precision and desk surface and wired or wireless weight and connection
For vertical mice, write the few actions that should occur every day or week around pointer precision and desk surface and wired or wireless weight and connection. Include cleaning, charging, refilling, data review, physical inspection, or supervision where relevant. If those actions are harder than the previous standard mice or trackballs routine, the new product has not removed the original friction.
Test recovery deliberately
For vertical mice, safely simulate the most plausible ordinary failure created by the ownership path: loss of power, video, USB, network, driver support, saved settings, a consumable, or an adjustable part. Confirm the relevant alerts, manual controls, saved settings, physical checks, and exact steps needed to resume the routine without creating a second problem.
Review after a normal week
Compare time saved, new chores, reliability, user or animal response, and maintenance. Revert when pain worsens, the mouse is too large or small, or desk and keyboard position still force the arm to reach outward. Keep the workflow only if it solves the original job and remains understandable to the people who must use and recover it.