Help…RFID Tech needed for Advertising Campaign

I was hoping that someone can help me out. I am with an advertising agency, and one of our big clients wants to launch an ad campaign using RFID technology very similar to Mini Coopers recent campaign in the link below:

http://www.technologynewsdaily.com/node/5962

Does anyone work for/know of a company that would be able to provide this type of service? If so, what is the preliminary budget range? If you do not do this type of work, but can recommend a company that specializes in this that would be great. I am new to this type of technology and any help you would be able to provide would be much appreciated. Thank you.