Nintendo is considering the possibility of developing controller peripherals for mobile, according to its recent shareholder Q&A.
The board of directors was asked about the possibility of developing such a controller if the company were to develop "action" games for mobile.
"Physical controllers for smart device applications are available in the market and it is possible that we may also develop something new by ourselves," said Shinya Takahashi, General Manager of Entertainment Planning and Development Division at Nintendo.
"On the other hand, I believe Nintendo's way of thinking is to look at whether action games are really not impossible (without a physical controller for smart device applications) to create and how we can make it happen to create such a game," he went on.
Nintendo is also looking into other technologies to develop for, including VR.
"We are researching not just VR but AR and many other technologies," said Nintendo's Shigeru Miyamoto.
"For VR in particular, we are continuing our research, and looking into development with a mind to how our current core products are meant to be played for a relatively long period of time."
You can read the director's comments in full on Nintendo's website.