' Multi-touch Mountain Lion’, by diffractive – video, 1’13'.It was only thanks to fellow OS X end users vividly showing what can be done, such as. Online research and pre-sales email conversations with candidate touchscreen monitor OEMs highlighted a dispiriting fact: Apple’s official line – “Touchscreens: iOS = Yes, OS X = No!' – has had a generally chilling effect on said OEMs (whose touchscreen monitors are designed for Windows 8 computers), in that, when it comes to adding one of their touchscreen monitors to an Apple Mac OS X computer, they range from uninterested via dismissive to woefully ignorant. Having become familiar and comfortable with using a touchscreen to control phones (Android 4.4) and tablets (Windows 8.1 and Android 4.4), in 2015 I sought to bring a new lease of life to a retired 2008-vintage MacBook Pro by adding a multitouch monitor.