Method of verifying authenticity of goods uses combination codes that have a random portion and a non-random portion that includes at least a secret portion that is encrypted. The combination codes are encrypted and may be applied to goods and checked to determine authenticity of goods; the secret portion...http://www.google.fr/patents/US7283630?utm_source=gb-gplus-shareBrevet US7283630 - Verification of authenticity of goods by use of random numbers
Verification of authenticity of goods by use of random numbers
