The Full functionality of Air View on Galaxy Note 3 is by using S Pen, but you can select to use Fingers to perform some of Air View commands. Air View Finger is enabled by doing as follows:
1. Open Settings and then go to Controls tab
2. Tap Air View.
3. Tap Air view mode and then select Finger (you may also select Auto, so the device understands whether you are using the S Pen or your Finger to use Air View)
** Note that inserting/attaching content, adding recipients, and displaying available actions.