Method for realising a transmission of information from a coordination centre which coordinates a deployment of security forces or auxiliary services within an area of operations to a participant present, as part of the security forces or auxiliary services, within the area of operations, wherein - the information which is to be transmitted comprises at least information regarding the geography and/or infrastructure within the area of operations, - an ensemble of several computer modules is provided, each comprising a microprocessor, a storage element and a communication interface for communication with participants present within the area of operations, characterised in that - the information intended for transmission to the participants is stored in the storage elements of the computer modules, - following storage of the information in the storage elements of the computer modules, these are arranged, distributed randomly and spatially, within the area of operations, - signals are transmitted from the computer modules arranged within the area of operations which allow the participant to locate the computer modules, - an authentication of the participant present in the vicinity of the located computer module is carried out by at least one computer module located by the participant, - following successful authentication of the participant, at least a part of the information stored in the storage element of the located computer module is transmitted, at least by the located computer module, via the communication interface, to the authenticated participant present in the vicinity of the located computer module, and - following expiry of a service life limited to the anticipated duration of the deployment of the security forces or auxiliary services within the area of operations, the computer modules of the ensemble become inactive and no longer transmit signals which would allow location of the computer modules within the area of operations, and no longer carry out authentication of and/or transmission of information to authenticated participants present in the vicinity of the located computer module. - the information which is to be transmitted comprises at least information regarding the geography and/or infrastructure within the area of operations, - an ensemble of several computer modules is provided, each comprising a microprocessor, a storage element and a communication interface for communication with participants present within the area of operations, characterised in that - the information intended for transmission to the participants is stored in the storage elements of the computer modules, - following storage of the information in the storage elements of the computer modules, these are arranged, distributed randomly and spatially, within the area of operations, - signals are transmitted from the computer modules arranged within the area of operations which allow the participant to locate the computer modules, - an authentication of the participant present in the vicinity of the located computer module is carried out by at least one computer module located by the participant, - following successful authentication of the participant, at least a part of the information stored in the storage element of the located computer module is transmitted, at least by the located computer module, via the communication interface, to the authenticated participant present in the vicinity of the located computer module, and - following expiry of a service life limited to the anticipated duration of the deployment of the security forces or auxiliary services within the area of operations, the computer modules of the ensemble become inactive and no longer transmit signals which would allow location of the computer modules within the area of operations, and no longer carry out authentication of and/or transmission of information to authenticated participants present in the vicinity of the located computer module.