I agree with some of the above comments. Prices will decrease for 4K resolution paired with 84" monitors over time. With the price tag today only a select market is capable of purchasing these displays. Here is another interesting article highlighting touch screen and 4k content
A multi-touch display boasting an 84-inch screen and an ultra-HD resolution is some fine piece of engineering and a marvel in its own right. The touch response time is mighty impressive as well. Considering that it also comes with a toughened safety glass for panel protection, the makers have left very little to complain about. Support for stereoscopic 3D would've been the icing on the cake. The only barrier to entry is the hefty price tag.
There have been large touchscreen for some time. They were called "Microsoft Surface" at that time. Now that name is used for smaller screens. They sported up to 32 inputs. Some even had depth sensing, if I recall.
However, this size is unprecedented. I am sure the price would shock as well.
Yes, there were touch screens in Minority Report. I don't remember them in Back to the Future II. Mostly I've seen them -- real ones -- in political maps during campaigns. Chuck Todd, among others, is very good at using one effectively.
Rob, wasn't there a movie called Minority Report (with Tom Cruise) where they used giant touch screens? I'm also wondering if they used a giant touch screen in part two of Back to the Future. The future always seems to get depicted with giant touch screens.
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Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.