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When you step away from your desk, make sure that you are protecting any important information on your computer or documents on your desk by leaving the Portal 2 Desk Defender on guard.

This miniature Portal 2 Sentry Turret can be plugged into a USB port and activated when you leave your cubicle or office. It has a red light that senses when people pass by, and if someone gets too close, it will send out a warning such as "preparing to dispense product" before opening up its side panels and firing deadly lasers at them.

So maybe it won't actually shoot at people, but the Portal 2 Desk Defender does make convincing weapon noises.