If you work in an environment where workstations automatically lock after periods of inactivity the Mouse Jigger might come in handy. The device, when plugged into a USB port, periodically moves the mouse ever so slightly.
Computer Forensics Investigators use Mouse Jiggler to prevent password dialog boxes due to screen savers or sleep mode.
IT Professionals use Mouse Jiggler to prevent password dialog boxes due to screen savers or sleep mode after an employee is terminated and they need to maintain access to a computer.
IT professionals or office workers use Mouse Jiggler when downloading/installing programs to keep overactive screen savers from interfering.