With Nintendo taking a beating in terms of profits, it's no shock that rumours are surging about what they may be planning next. Nintendo News claim that an "anonymous tip from a reputable source" has sent them details of Nintendo's next move.
They claim that Nintendo are working on new hardware; two devices that will support the 3DS and the Wii U, called the "Fusion DS" and "Fusion Terminal". Notably, the Fusion DS has some kind of thumb print locking device ("Thumbprint Security Scanner with Pulse Sensing Feedback").
Note that this is very much just a rumour at present, but Nintendo News do have a decent track record.