rudolfo, Very good find. In addition to G4S I see GSK also had/has an agreement with SPROXIL which was initiated in March of 2011. Originally proposed for Nigeria and other countries in Africa with designs on India.
Further searching on the Securing Industry site indicates that in December of last year "Sproxil and GlaxoSmithKline have won an Institute for Safe Medication Practices Cheers award for their anti-counterfeit medicines programme in Nigeria, which makes use of unique codes on antibiotic packs that can be verified by text message."
It seems GSK has been very active in their anti-counterfeiting efforts, if true, any "joint venture" signed with them says a lot given they've "been there, done that"...