This new technology works in all types of weather. HAVR, reacts not with sunlight as such but with the bright transmission of the flash (on-off tones/signals), a little bit as a unique morse code.
I understand that it's not opened by a lot of light, but with some pattern in the light intensity.
My question is how reliable it is in a sunny day when there is a lot of background light and the signal to noise is much smaller. Do you have a working prototype?