The invention also provides {HEAD ~ apparatus} for implementing {TAIL ~ the method}, and security paper useable with the method 
for implementing
The invention also provides { HEAD ~ apparatus } for implementing { TAIL ~ the method } , and security paper useable with the method
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH