Yes, that one was a true concept only. Of course, now Lenovo has shown it off for real, albeit without the electric muscle part.
The Surface table line (later renamed Pixelsense) sold from 2008 to at least 2013. I lost track of it after that. It was never meant to be for consumers, btw.
The iPhone was the first multi-touch phone to market. But Jobs claimed "we have invented a new technology called multi-touch". That deliberately ignored all that had been going on for decades, and more especially during the year that the iPhone was in actual product development.
For instance, the Open Linux developer phone with multi-touch and pinch-to-zoom had been been announced
two months prior to the iPhone:
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Semi smart?? Other smartphones were much more powerful at the time. They had 3G, video cameras, some had front-facing cameras for video calls, many had GPS. And they all supported third party apps, which the first iPhone did not.
Yes and no. Heck, the very FIRST smartphone on the planet, the 1993 IBM Simon had a finger friendly UI:
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Even my 2005 Samsung smartphone came with some finger friendly apps, such as this control center:
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And of course WinMo had a touch friendly dialer. (Apple later also used a left leaning white phone on a green background icon):
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Not really. For one thing, most phones had a cursor pad so you could do everything with your thumb. As for other interaction, most of us rarely used a stylus except to do drawings and handwritten notes. (I used to do that a lot before going to Home Depot. Very handy!)
Otherwise, you only really needed a stylus (or fingernail) for default tiny onscreen keyboards. But touch phones with slide out keyboards took care of that. Or you could use bigger third party onscreen keyboards, like this one that I used:
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Just different software. For example, remember this 2012 test:
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Personally I'd love it if Apple told us what they were working on (actually Cook hints at things like VR) and showed us prototypes.