During an emergency every second counts. That is the premise behind Guardian One. The iOS app is the companion Mobile Application to the Guardian One software. Guardian One (Active Lockdown and Emergency Response Technology) is a cloud based software solution that empowers school staff by allowing them to initiate a school lockdown from any authorized and configured smart phone, tablet, or desktop PC. This significantly reduces the amount of time between the recognition of a threat and the initiation of a school lockdown. The Guardian One System integrates with existing (or future) electronic door locks and surveillance cameras, allows school staff to check in with location and student counts when safe, and allows school administrators and law enforcement to provide instructions to staff during a lockdown.