Most job functions presume use the same applications on a daily basis. Not every day is the same. Some days more computer input than others. Also where you wait on work. Ive heard people say they had experimented with this in varying degrees. By using a timer, set it in varying increments, come back before it expires. Between apps used, never to established a pattern in which they went to next always random. Set timer for another time allow enough time to get back before showing away. They didn't use a mouse thing either.
Something too they said to avoid a suspicious pattern in that, it's good to let it go away for various times as well. Alternate days not always do it etc. As being available all the time would be suspicious too lol.
I'm like that's a pretty elaborate scheme. Able to get some errands done and all their household chores. soon as they sign off for the day theyd have the rest of the day to chill out.