Supports gestures too!
If you have a 21.5-inch iMac AIO computer and have ever wished that it had a touchscreen to use instead of the keyboard and mouse, you'll like the new Zorro Macsk. This device is a screen overlay that attaches to the frame of your iMac. It connects to the computer with a USB cable and is magnetic so no screws are needed.
The Zorro Macsk leaves enough clearance for full operation of the optical drive and has a cutout around the Apple logo as well as the integrated web cam and activity sensor. Once connected the device needs no calibration and no drivers are needed. It turns the screen into a touch device that supports most gestures such as pinching and swiping. You can pick one of these up now here on 21.5-inch iMac for $199 via Amazon.