ThinkGeek Phantom Keystroker V2 - Time Delay Dial, Caps Lock, Keyboard, and Mouse Switches - High-Tech Office-Based Prank Device HIGH-TECH OFFICE-BASED PRANK DEVICE - The Phantom Keystroker V2 looks like a harmless flash drive, but it will drive your friends and coworkers mad as you make random mouse movements and type out random texts and phrases. SWITCHES AND DIAL - It has three different switches on the side. Choose between Caps Lock toggle, Keyboard typing (produce phrases such as "I see what you are doing", and Pi to a bunch of digits), Mouse movements, or all three. It also has an adjustment dial to set the duration between pranks. MATTE BLACK - Comes in a sleek matte black color. It has the following dimensions: 2 1/2" long x 3/4" wide x 1/4" thick. USB PORT - Can only be attached to a computer with a USB port. It will also work on any OS. A THINKGEEK CREATION - The Phantom Keystroker V2 is a ThinkGeek creation and exclusive.