A security system incorporating one or more sensors and one or more smart devices connected together via the Internet, other network or media. The one or more smart devices may have an alarm application (app) that permits a user to set and unset an alarm, monitor a status change of an event, have access to video information associated with the event, take remote or local action relative to the event, and more. The processing may be more than moving processing to one smart device. Core control may reside in more than one device, and thus result in a whole system robustness.