The 2015 Mobile World Congress held recently in Barcelona, Spain was packed with CMOs and marketers than previous years. No surprise, given the incredible impact Mobile is having on marketing agendas and spend.

Some pretty interesting trends/challenges/opportunity are emerging as overarching themes; Consumers realizing ‘free’ isn’t free, when it comes to privacy. Consumers are most interested in apps that enable them to disable tracking.

New product launches need to have definitive user experience hooks, like curved screens--Something memorable and unique, to have a real pop in the marketplace. Eyetracking is fast-becoming an important tool for marketers. Data visualization is very hot, and gaining a lot of momentum. Lastly, everything’s connected, from refrigerators to shoe insoles.

Read more in this article from CMO.com.