diff --git a/src/webrtc.rs b/src/webrtc.rs
index 597acf3..6046b7e 100644
--- a/src/webrtc.rs
+++ b/src/webrtc.rs
@@ -259,6 +259,8 @@ impl WebRTCStream {
     #[inline]
     pub fn set_key(&mut self, _key: Key) {
         // not-supported
+        // WebRTC uses built-in DTLS encryption for secure communication.
+        // DTLS handles key exchange and encryption automatically, so explicit key management is not required.
     }
 
     #[inline]