The lighting device may change color in {HEAD ~ response} to a data read by {TAIL ~ the non physical contact data interface} 
The lighting device may change color in { HEAD ~ response } to a data read by { TAIL ~ the non physical contact data interface }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL