More Capacitive Screens

Capacitive: Capacitive touchscreens tend to be more accurate and responsive than resistive screens. Because they require a conductive material, such as a finger tip, for input, they are not common among (stylus using) Tablet PCs but are more prominent on the smaller scale “tablet computer” devices for ease of use, which generally do not use a stylus, and need multi-touch capabilities.

Multi-touch capabilities, which can recognize multiple simultaneous finger touches, allowing for enhanced manipulation of on-screen objects.[33]

Palm recognition. It prevents inadvertent palms or other contacts from disrupting the pen’s input. reference - wikipedia