If so, what have you learned? What percentage of tags are made of graphene?
We are not tracking this. However, one company offering such tags, Graphene Security Ltd., is an exhibitor at RFID Journal LIVE! and a finalist for Best New Product in our 2016 RFID Journal Awards (see Finalists Unveiled for 10th Annual RFID Journal Awards). I have not seen any statistics regarding the percentage of tags that are made of graphene, but I expect that the number will grow over time, due to graphene's low cost and environmentally friendly nature.
—Mark Roberti, Founder and Editor, RFID Journal