Have you ever wonder how a lamp that is used to light up the stairs of a building is connected to the two switches that controls it from either end?These two way switches have a single pole double throw (SPDT) configuration.
The LIVE AC Source is connected to L1 of SW1 and one side of the load is connected to L2 of SW2.
You can use your android as webcam even without wifi by connecting it to your PC via USB.
But doing this requires extra work because android can communicate with PC via USB only in debugging mode by using adb.
My best guess is that video is streamed at a resolution of 192 x 144 pixels, H.264, 44khz sound.
As for the frame rate I haven’t seen it go above approximately 12 frames per second as far as I can tell.