First, we we're told multiple user accounts were a no-go, then this was withdrawn. Now, it seems that's now been retracted. According to an email send by a Sony representative to Wired, the PSN account on the PlayStation Vita is "tied to the hardware and the memory card" and a simple removable storage switch-out won't suffice. You'll need to hit the big red factory reset button in order to use a different account on Sony's online network, the doorway to both online gaming and their digital store. This will lock down the opportunity to flit between different regional networks -- barring a wipe -- and is something to bare in mind if the temptation of an early Japanese release has you reaching for transpacific import options.