Automatically switching to a barricade mode to secure mobile computing devices in response to predetermined mobile computing device events

A predetermined event occurring on a client device is detected. The predetermined event can be in the form of a user-initiated action, an audio command, geolocation information, a breaking of a wireless connection, or exceeding a relative distance. The detection of the predetermined event triggers a switch of the current access mode of the client device to a more secure access mode. Access mode switches on other client devices may also be triggered. Additional actions may be executed on the client device and the other associated client devices to further secure these devices.