AirDroid Cast's remote service uses p2p (peer-to-peer) direct connection technology. The transmission is solely done between clients without going through a relay server. The transmission goes through the relay server only when the client fails to connect via the p2p channel due to network limitations. The content is encrypted using end-to-end AES encryption to ensure the safety of the transmission. Our server doesn't store any of your transmitted data and content to ensure user privacy.