Transparent digital signage portal on glass windows and plexiglass panel (e.g. sneeze guard) of stores or other commercial establishments. An custom-built BlueRay (405nm)-LED-DLP projection is developed to display HD-image onto haze-free green emissive screen, in front or rearview configurations. We offer 3 sets of SDKs with increasing brightness and optical output of the projectors of ~1 Watts, ~2 Watts, and ~4 Watts respectively, starting from $10,000.