If you've never used one, it's fair to be skeptical: can nudging the cursor a pixel really keep your computer active? The answer is yes, because that's exactly the signal your operating system uses to decide whether you're present.
What "idle" actually means
Your OS tracks the time since the last input event, mouse move, click, or keypress. Screen savers, sleep timers, and status apps all read that same idle timer. Reset it and the countdown starts over. A jiggler does precisely that, on a schedule.
Why some jigglers fail
A poorly built jiggler moves the cursor in a rigid, robotic pattern or at a fixed interval, which looks nothing like a human. Good jigglers use real OS-level cursor events with randomised timing and small, natural movements, so the activity is indistinguishable from your own hand.
Getting reliable results
Virtual Mouse Jiggler moves the cursor a few pixels at a randomised cadence and returns it, using genuine system cursor events. It keeps your machine active and your status accurate without any fake or scripted-looking activity. One subscription covers Mac, Windows, and Chrome.