Board Thread:Questions and Answers/@comment-49.144.57.173-20140318211247/@comment-1322623-20141231181648

I dunno how canon it is but....

ahem, be wary that the next part is little spoilerish...

in Hollow Fragment and Infinity Moment, it is revealed that Suguha did purposedly log in into the game using her Leafa account and unused NerveGear that she managed to get from her friend...

however, as I said its part of storyline from game version that is not canon, and even then the situation of the system at that time is pretty much unstable...