First Data provided Go-Tag ( contactless and mobile payment technology ) stickers to delegates and media representatives at the 2008 Democratic National Convention in Denver , who used them to buy food and beverages . These stickers possessed NFC chips which were read by First Data scanners , which through its back-end system deducted the purchase sum from the Go-Tag ID 's balance . First Data also provided the trusted service manager that provisioned accounts to the new mobile Google Wallet system
2008 Democratic National Convention
2008 Democratic National Convention
First Data