One of the highlights of Samsung's Galaxy Note II announcement at IFA yesterday was the increased functionality carried by the device's hallmark S Pen stylus. The Note II's version of the Pen, besides being "ergonomically designed for the perfect grip," allows users to quickly clip, crop, and edit screen content, adding further illustration and handwritten keyword recognition. The Pen now also features a unique "hover" functionality, whereby an app can recognize that the Pen is near the screen and react accordingly with contextual menus or other activities.
Looking to put the power of the S Pen to use in more than just Sammy's own apps, the manufacturer has posted the updated S Pen SDK version 2.2 with all of the Pen's new features.

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Samsung Releases S Pen SDK Version 2.2 With Hover Support, New Brush, And More was written by the awesome team at Android Police.