The Logcat output is a device wide logging mechanism that logs key system events and errors. This trigger will fire when the specified Logcat message content is seen within the device's Logcat output. You can enable this feature to work on non-rooted devices using the adb tool from a connected PC. For full information check out this forum post here: https://macrodroidforum.com/index.php?threads/adb-hack-granting-extra-capabilities-via-the-adb-tool.48/