You can signal in more ways than this: email, QR code or any method that can transfer a small amount of data [1]. You do need to think of the security of this c

You can signal in more ways than this: email, QR code or any method that can transfer a small amount of data [1]. You do need to think of the security of this channel though as it forms the basis of authenticating the other party through the fingerprint attribute in the signaled SDP payload [2]. [1] https://developer.mozilla.org/en-US/docs/Web/API/WebRTC_API/Session_lifetime#Signaling https://developer.mozilla.org/en-US/docs/Web/API/WebRTC_API/... [2] https://rtcweb-wg.github.io/security-arch/ https://rtcweb-wg.github.io/security-arch/