Rachio didn't need my wi-fi password to connect. Why?

Just received my Rachio today. Hooked it up and set it up. During the connection phase, I got a message telling me it could not connect, so I hit Cancel. Then the lights started going and before I knew it, all the lights were lit and I was up and running. It never asked me for my wi-fi password. How did that work? Is it because the App was already connected?


@alfredoj - Black Magic or Voodoo or see -> WiFi Password Transfer & Storage?