Possible with VDI
I was mulling this over and I was agreeing with Vulpine and chrisbedford, this is all just a phase. But there might be something here if this is linked to VDI. Since VDI takes all of the compute work and moves it to the data center or the cloud, you can replace the desktop with a VDI terminal. If you do that, why not make your terminal portable in the form of a smart phone or tablet? There is likely enough power in newer mobile devices for this purpose and you can even use it as second form of authentication. One challenge I see is standardization around the infrastructure to make it happen.
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