There are basically two waysof throwing things to the rear display: In a customized app (made either by Yota or by a third party using the open APK), you can tap a symbol in the top right corner and the app will send currently displayed items across to the back.
Today, creative minds are at work developing electronic systems to track and display the energy use of institutional and individual consumers in ways that could make those users much more conscious both about how much energy they consume and about precisely what they could do to cost-effectively consume less.