Using a wristband with a sponge reduces the time and movement of your testing hand. You can use the pinky of the hand holding the stylus to apply the moisture – leaving your supporting hand in place. You will need a wristband, coarse side of Velcro with adhesive on back, small sponge and plastic bottle cap.
Apply the Velcro to the bottle cap, attach to the wristband, place the sponge inside the cap. You should replace the sponge daily and launder the wristband often.