You could use the hot lines from RBG as the binary id (2^3) of the monitor and then average up the RBG intensity from the hot lines as the result. This would g

You could use the hot lines from RBG as the binary id (2^3) of the monitor and then average up the RBG intensity from the hot lines as the result. This would give you 8 monitor support. Or you could limit it to 3 monitors but two hot lines pick the monitor and then you can sum the intensity on those two hot lines two double your fidelity. If you do the two line color system you could have a YC signal of luminance (Y) and chrominance (C) and thus you have a color signal.