WiebeTech on Wednesday introduced its Mouse Jiggler, a new thumbdrive-sized USB hardware solution to prevent a computer from entering sleep or screen saver mode while users work, or while they are away from their desks. Mouse Jiggler is portable and automatic and does not require any software to install or run: it simply plugs into any empty USB port. Mouse Jiggler is available in two versions -- each priced at $30: MJ-1 employs constant, nearly imperceptible motions to allow normal use of the computer while it works. Mouse Jiggler continues working to keep the computer awake while users are away from their desks. MJ-2 uses larger, jerkier motions to show at a glance that Mouse Jiggler is working. "Users who have a large file download or software installation can plug in Mouse Jiggler and walk away confident that no idle events will affect their work," the company said. Both versions are available now.