Touch interface has become an integral part of our digital lives. Now that most all-in-ones come with a touchscreen since the debut of Windows 7, it doesn't make sense that iMac still hasn't gotten one as all the hardware and software are readily available. Granted, in terms of usability, no one really wants to hold his or her arms up for a long of period of time. But there's certainly a niche demand for a touchscreen Mac and TMDTouch has decided to fill the void with Zorro Macsk. Zorro Macsk basically is a USB add-on that adds touch functionality to a 21.5" iMac with infrared technology. To install, it's as simple as securing its large aluminum frame to the front of the Mac and plugging the USB cable. The frame is magnetically attached so there are no screws to mess with. The unit is also driverless so there's no need for calibration. TMDTouch claims most finger gestures are supported, including but not limited to swiping, scrolling, clicking and pinching. Zorro Macsk - designed and made in China - could prove to be an an elegant solution for iMac owners who would also like to run touch interface-inspired Windows 8.