Install WonderBox for NAS and get a WonderBox ID. Install WonderBox for Android on your phone or tablet. Add your NAS to "My Stuff". Add Contacts. Under "My Stuff", long press a file or an entire folder to start the "Share" panel. Sharing comes in forms of "Boxie". And there are four kinds of boxies: Express boxie, Secure boxie, Timed boxie, and Combo boxie.