Can a capacitive pen write anywhere on the iPad?

The capacitive pen can write anywhere on the iPad. A passive capacitive pen can be used with any iPad, but this type of pen has insufficient accuracy, high delay, broken touch, and poor writing experience, and can only simply replace fingers. Active capacitive pens, some of which are not universal. The capacitive pen can write smoothly directly on the iPad. Writing with a capacitive pen directly on an iPad can be smoother than writing on glass.