TEDConnect is a FREE app, available on iOS and Android that helps you keep in touch with other conference guests, keep track of the program, meet new friends, and learn about your favourite speakers. (OK that blurb was for attendees)

To get started with TEDConnect:
  1. First, you need a TED.com account. If you don’t have one, sign up here using  the email you used to register, it’s free.
  2. Download the TEDConnect app (available in iOS App Store, or in the Google Play Store).
  3. Log into TEDConnect with the same login info as your TED.com account.
  4. Update your profile, meet other attendees, and explore the program!