With the SelfLoops Group Fitness service you can track group cardio training sessions using an Android device. Now you can also stream your sessions wirelessly to TVs and projectors using Miracast™, a technology supported on Android 4.2 and higher.
The Nexus 4, Nexus 5, Nexus 7 (2013), Nexus 10, and several other Android devices support the Wi-Fi Certified Miracast™ protocol for wireless display. To turn on the wireless display feature, go to Settings > Device > Display > Cast screen > Menu, then check the box next to “Enable Wireless Display.”
Many new TVs and projectors are Miracast enabled, or you can just plug a Miracast dongle on the TV HDMI port.