It is not at all safe and should absolutely not be on the FP.
https://news.ycombinator.com/item?id=47122939 (yesterday, 3 points, 4 comments)
https://news.ycombinator.com/item?id=47103613 (Sunday, 1 point, 0 comments)
Then you’re all in for like $3. What about webRTC makes this better?
Just kidding
When the mac app is running it makes an outbound connection to my signaling server and registers itself under the account. iPhone also connects to this same signaling server to request a connection to this mac. Once both the host and remote are verified it establishes a direct p2p webrtc connection.