An article on how technology is used to counter medicines counterfeits, including
mPedigree – HP joint venture for drug authentication

http://www.scidev.net/global/health/feature/fighting-fake-drugs-with-high-tech-solutions-1.html

and in closing:
“… academics, regulators and industry are rolling out new technologies to try and get a step ahead of the counterfeiters. But even the technologies’ inventors admit that nothing can replace a properly functioning national pharmaceutical regulatory system.”