The magic of algorithm-based palm rejection allows tablet and laptop users to write naturally for the most part, but you often end up contorting your arm in an unnatural fashion to avoid unintentional contact with the screen.
If you spend a lot of time writing or drawing on your touchscreen with a stylus or even your finger, palm rejection offers a number of compelling upsides. However, there's no such thing as a flawless algorithm and sooner or later, that errant palm will fool the code and wreak havoc on your work having to go back and fix these mistakes will cost you - one way or another Top Five Benefits of Reliable Palm Rejection Generally speaking, those algorithms do a good job of rejection, making sure that only intended finger or stylus strokes are recorded. Ultimately, palm rejection is the end result of sophisticated algorithms that are designed to make educated guesses (since mindreading is not a thing). Why Software Alone Can't Deliver Perfect Palm Rejection Paired with the right software, a decent touchscreen can use both technologies simultaneously to make digital writing a dream. On the flip side, touchscreens use capacitive sensing to detect pressure applied by a human finger. A touchscreen stylus relies on inductive resonance to detect pressure and translate it into brush strokes. There are primarily two technologies that touchscreens use to detect contact: inductive resonance and capacitive current detection. Under the best of circumstances, users are rewarded with a consistent digital experience that's nearly identical to its analog equivalent. A device and its software employ a variety of advanced algorithms to figure out which inputs are intended by the user.
Palm rejection is the ability of a device like a tablet to differentiate between a stylus or a fingertip and a palm or a wrist, effectively “rejecting” unwanted contact.
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