Given that the S-Pen is one of the biggest selling features of the Galaxy Note series, it would make sense for Samsung to want to push every use of the stylus it can. A recent patent application suggests that the Korean company is looking to do just that.
US 20140038557 A1 suggests that Samsung will be adding a way to unlock your Note through handwriting. The feature will do so by recognizing your handwriting. Of course, like fingerprints and voice recognition, you will have to train your Note to recognize your handwriting. While current generations of the Note series do this already, allowing you to unlock your device with your signature, this would expand on that. The patent will allow actions to be performed based on hand written commands. For instance, if you wanted to call mom or dad, all you’d have to do is write “Call Mom” or “Call Dad” on the lock screen and the device would do so.
Whether or not we’ll see this in the Galaxy Note 4 is yet to be determined, but expanded S-pen functionality is something to be excited about. If you’re up for the technical details you can check out the patent application from the source link below.