Stream any audio or video file to your Projector / IFP. 2. Use your smartphone as Remote Controller for your Projector / IFP. 3. Mirror your mobile screen to your Projector / IFP. 4. Mirror your desktop screen to your smartphone and touch the screen directly to control your Projector / IFP, as if you are touching your Projector / IFP. This is the client side APP. The server APP is exclusively found on Optoma Projector / IFP that has TapCast Server built in.