You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract NBC Universal and American Express Try to Bring Dawn of 'Television Commerce' Using 'Second-Screen' Devices to Make Impulse Buys Is Still in Infancy By Brian Steinberg, Published on November 07, 2012 2 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.