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 How Mobile-Tech Players Are Crumbling the Cookie Microsoft, Google, Apple Look to Track Consumers on Phones, Devices By Mark Bergen, Published on April 14, 2014 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.