In a typicalXDA-Developers fashion, they did a deep dive into the Galaxy Watch3 Plugin app and found some interesting stuff about the watch itself. And it has nothing to do with the hardware features, design or the physical rotating bezel. This one is all about hand gestures. According to the source code, the Galaxy Watch3 will support hand gestures for answering or dismissing a call. For instance, you will be able to clench and unclench your fist to answer a call and since the device will be equipped with a microphone and loudspeaker, you can do that directly onto the...
Source: https://www.gsmarena.com/galaxy_watch3_plugin_app_reveals_hand_gestures_and_fall_detection-news-44456.php