Abstract: A method for modeling and simulating a system of systems, involving a technical system of interest as well as of a plurality of systems external to the technical system of interest, forming the environment wherein the system of interest evolves.

Abstract: A method for enabling secure transactions without the physical support of a security identifier and, in particular, without a token, consisting in recording on a first computer device B a unique digital identifier IDi associated with a unique user Ui, the profile IDi being associated with at least one service identifier IDsi associated with a service Si registered on a second computer device S which is different from the first computer device B, the service Si being accessible by the user Ui, and, during a transaction, acquiring the digital identifier IDi of a user Ui, transmitting it to the first computer device B for comparison with the registered ID identifiers and searching for and activating on the computer device S, at least one service associated with the identifier of the user Ui.

Abstract: A method for enabling secure transactions without the physical support of a security identifier and, in particular, without a token, consisting in recording on a first computer device B a unique digital identifier IDi associated with a unique user Ui, the profile IDi being associated with at least one service identifier IDsi associated with a service Si registered on a second computer device S which is different from the first computer device B, the service Si being accessible by the user Ui, and, during a transaction, acquiring the digital identifier IDi of a user Ui, transmitting it to the first computer device B for comparison with the registered ID identifiers and searching for and activating on the computer device S, at least one service associated with the identifier of the user Ui.

Abstract: A method of a secure transaction without physical support of a security identifier and without a token includes recording on a biometric server a biometric profile linked intrinsically to a unique user, the profile being associated with at least one service identifier, recorded on a server distinct from the biometric server, the service identifier being accessible by the user, and during a transaction, acquiring the biometric profile of a user, in transmitting it to the biometric server for comparison with the biometric profiles recorded and in searching for a service associated with the profile and activating it on the service server. The step of recording a new user includes the time of receipt by a central server of a profile, the execution of a step of generating a temporary master random key.

Abstract: A method of a secure transaction without physical support of a security identifier and without a token includes recording on a biometric server a biometric profile linked intrinsically to a unique user, the profile being associated with at least one service identifier, recorded on a server distinct from the biometric server, the service identifier being accessible by the user, and during a transaction, acquiring the biometric profile of a user, in transmitting it to the biometric server for comparison with the biometric profiles recorded and in searching for a service associated with the profile and activating it on the service server. The step of recording a new user includes the time of receipt by a central server of a profile, the execution of a step of generating a temporary master random key.