https://www.techradar.com/news/galaxy-note-9s-s-pen-rumored-to-boast-bluetooth-functionality

We've heard the rumor that the Galaxy Note 9's new S Pen could very well be its standout feature, but we didn't yet have any (realistic) ideas of just what that might entail — until now. 

According to prolific leaker IceUniverse , the new S Pen is set to receive a Bluetooth upgrade, allowing it to do much more than just write on the Galaxy Note 9's screen.