How to differentiate whether a user is tapping the screen with his finger or an apple pencil?

Question

The App supports iPad Pro and it has to work with the Apple Pencil. What I would like to do is to differentiate whether the user is using the Apple Pencil or his finger.

Answer 1

The UITouch class in iOS 9.1 has a touch property which returns the type:

typedef enum {
    UITouchTypeDirect,
    UITouchTypeIndirect,
    UITouchTypeStylus       // THIS ONE
} UITouchType;