Unique Identification Authority of India a project being spearheaded by Nandan Nilekeni.
http://www.afaqs.com/perl/news/story.html?sid=27253_UIDAI:+Brand+for+a+billion
Percept Haukuhudo is the agency appointed
http://www.afaqs.com/perl/news/story.html?sid=27311_Percept/H+appointed+creative+agency+for+Aadhaars+pilot+phase