The field relates generally to the field of controls and, more particularly, to method and {HEAD ~ apparatus} for controlling dispensers and for detecting {TAIL ~ users} 
for detecting
The field relates generally to the field of controls and , more particularly , to method and { HEAD ~ apparatus } for controlling dispensers and for detecting { TAIL ~ users }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL