FC
2009
Springer
14 years 7 months ago
2009
Springer
Abstract. A certificate of authenticity (COA) is an inexpensive physical object with a random and unique structure S which is hard to nearexactly replicate. An inexpensive device ...
DCC
2005
IEEE
15 years 23 hour ago
2005
IEEE
A certificate of authenticity (COA) is an inexpensive physical object that has a random unique structure with high cost of near-exact reproduction. An additional requirement is th...