Did Samsung just tease a Galaxy Note 4 with a retinal scanner?

Samsung is be planning to introduce retinal scanning tech for its future mobile gadgets, judging by a tweet send out by the company on Saturday. The improved security was hinted within a post from the Samsung Exynos Twitter account and promised features “unique to us,” accompanied by a picture showing a mobile display scanning an eye. “Security can be improved using features unique to us. That’s what we envision. What would you use?” the firm wrote, using an ExynosTomorrow hashtag.