http://www.nytimes.com/2016/10/07/technology/personaltech/move-around-an-imac-by-touch.html 2016-10-06 18:29:31 Move Around an iMac by Touch If you like the trackpad shortcuts on Apple’s laptops, you can use many of the same moves on an external trackpad for your desktop computer. === Q. A. Apple’s own $129 Once you connect the Magic Trackpad 2 to the iMac over a Bluetooth connection, you can tap its surface to click, scroll through web pages by sliding two fingers, zoom in with a two-finger double-tap, pinch, zoom and all the other familiar gestures you use on your MacBook. You can If you have older iMac hardware, Logitech’s discontinued Rechargeable Trackpad for Mac