Abstract: In an approach to invention purpose, for controlling evacuation of a plurality of individuals carrying corresponding portable computing devices from a venue having a plurality of exits associated with corresponding exit computing devices, wherein the method comprises, under the control of the portable computing device of each of the individuals. One or more computer processors receive one or more of evacuation messages of wireless type each being transmitted by a source entity. The one or more computer processors select a selected evacuation message of the received evacuation messages according to the hop number of the received evacuation messages. The one or more computer processors subscribe to a directed exit being set to the origin exit of the selected evacuation message.

Abstract: In an approach to invention purpose, for controlling evacuation of a plurality of individuals carrying corresponding portable computing devices from a venue having a plurality of exits associated with corresponding exit computing devices, wherein the method comprises, under the control of the portable computing device of each of the individuals. One or more computer processors receive one or more of evacuation messages of wireless type each being transmitted by a source entity. The one or more computer processors select a selected evacuation message of the received evacuation messages according to the hop number of the received evacuation messages. The one or more computer processors subscribe to a directed exit being set to the origin exit of the selected evacuation message.