You maybe answer the sensitivity level but there is also the need to some kind of powering off the 500KHz signal send when not using the pen.
Then can we use the sensor to activate the pen ? What about the Bluetooth button ?
The wacom screen could be initialize from the begining with Project Trebble. What's the differences with LOS for S9s ?
the phone thinks the pen is a mouse input.
once a framework is built to recognize it as a spen then a discussion can be opened.