Bringing the iPhone's multi-touch interface to Mac OS X would be a difficult prospect, say two ex-Apple workers, speaking anonymously because of non-disclosure agreements. A former senior engineer notes that it is comparatively easy to implement Apple's present Mac multi-touch efforts, which are limited to mouse and trackpad gestures in a few apps. He adds that it may be a "whole different story," however, to bring multi-touch to the desktop or all aspects of the operating system.
