The NFC Hardware is in the Phone. The Charger Stand has a Built-in NFC Tag.
When the App pops up Showing you your apps, you set as many actions of Apps to take place when it is put on the charger.
For Example, When i Dock mostly I dock to Play Internet radio, set radio app and what station to play, and I also like the Big clock etc to show....It lets you set Macros to take place with that Tag Built in.
Like the way a Car Dock sets the Car Mode, screen position, Nav, Big Visual Buttons etc..
Hope this Helps.