On a serious note, I guess that the point here is that the device "plays nice" with what most users do to transfer media/files back and forth their PC's, Macs, etc.. I personally don't undertsand how hard can it be to mount a device (not to mention with the added security benefits), but most people disagree with me.
If Jolla wants to reach out to the mass market, it's good that when you plug in the Jolla device on a Mac or whatever, you get the expected reaction (somebody fill in the blanks here, I'm not that type of user).

There is a grey area, though, where Jolla can't do much, but I guess "as much as possible" would suffice. Now, if this "technology" can't be used because it's patented, then somebody write an application and make some money ;-)