The sensing element or sensor can be calibrated for a specific user or {HEAD ~ a group} of {TAIL ~ users} 
of
The sensing element or sensor can be calibrated for a specific user or { HEAD ~ a group } of { TAIL ~ users }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL