Method for identification

A communication device comprising means for storing identification data,

• wherein the means for storing identification data comprise means for performing the authentication in at least two steps of authentication, wherein the communication device comprises means for receiving at least one security inquiry containing identification data of the communication device transmitted to the communication device in the first authentication step;
• means for examining said identification data contained in the security inquiry to find out if the identification data matches with the identification data stored in the communication device;
• means for starting a time control if the comparison shows that the identification data do not match;
• and means for starting the processing of the next security inquiry message transmitted to the communication device after the finish of said time control in the communication device;
• and that the second authentication step is arranged to be taken only if the comparison shows that said identification data match.

A communication system comprising at least one communication network and a communication device comprising means for storing identification data,

• wherein the means for storing identification data comprise means for performing the authentication in at least two steps of authentication, wherein the communication device comprises means for receiving at least one security inquiry containing identification data of the communication device transmitted to the communication device in the first authentication step;
• means for examining said identification data contained in the security inquiry to find out if the identification data matches with the identification data stored in the communication device;
• means for starting a time control if the comparison shows that the identification data do not match;
• and means for starting the processing of the next security inquiry message transmitted to the communication device after the finish of said time control in the communication device;
• and that the second authentication step is arranged to be taken only if the comparison shows that said identification data match.

An identification card comprising means for storing identification data,

• wherein the means for storing identification data comprise means for performing the authentication in at least two steps of authentication, wherein the identification card comprises means for receiving at least a security inquiry in the first authentication step, the security inquiry containing identification data of a communication device;
• means for examining said identification data contained in the security inquiry to find out if the identification data matches with the identification data stored in the communication device;
• means for starting a time control if the comparison shows that the identification data do not match;
• and means for starting the processing of the next security inquiry message transmitted to the communication device after the expiry of said time control in the communication device;
• and that the second authentication step is arranged to be taken only if the comparison shows that said identification data match.