I recently attended a Salesforce World Tour. As part of being identifiable and being marketable you get this ID card that the exhibitors scan, so that they can get your name, company, email and whatnot. I was curious as to what chip or antenna is in this card. So I cut it in several strips in the hope to find something, but all I can see is solid plastic.
Where is the 'identifier'? Is the actual chip or antenna so thin that I can't make it out with my naked eye? Or is there another hardware piece that I haven't found yet?