iPhone multi-tasking concept borrows heavily from webOS
If you thought the activity cards metaphor used to manage multitasking on webOS was unique, think again, as it could very easily be looked at as an extension of Apples iTunes-originated Cover Flow. While we do fully believe that webOS was not developed with an eye on the less-than-spectacular iTunes interface, theres no denying the flipping through items aspect that bridges Cover Flow and webOS.
With Cover Flow already a part of the music app on the iPhone, it seems like an only logical step to extend it to handle multitasking apps in a similar manner to webOS, as
Ocean Observations thought. In fact, with the exception of the Coverflow Interface and ringed app icons, the whole affair is remarkably similar to that of webOS, right down to dragging/tossing apps off the browser to close them. While we as webOS supporters rather like the concept and find it very familiar, wed like to think that if Apple were to pursue multitasking on the iPhone that theyd take it in a direction all their own. The iPhone OS is quite intuitive, so lets not muddy the waters by stealing concepts from your [perceived] strongest competitor.
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http://www.precentral.net/iphone-multi-tasking-concept-borrows-heavily-webos