"{}Developer options"
on devices running Android 4.4.x KitKat
Go to: Settings > General (tab) > About device
tap few times on "Build number" until the "{}Developer options" show in the left menu.
In "{}Developer options"
- select USB debugging
I also often keep these 2 options selected when I share the device screen in demonstrations:
- Show touches
- Show pointer location
You can see the infinite sign I drew with my finger
For the screen sharing and capture I use command line software called "droid@screen"