At the POS, {TAIL ~ the user} invokes the application and then inputs {HEAD ~ a biometric trait} to the phone 
At the POS , { TAIL ~ the user } invokes the application and then inputs { HEAD ~ a biometric trait } to the phone
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH