Abstract: Security system fitted in a device, the security system comprising a command element that is actuatable by an operator at least to a first position and to a second position.

Abstract: Security system fitted in a device, the security system comprising a command element that is actuatable by an operator at least to a first position and to a second position.

Abstract: A system for managing time-stamped events with uncertain events-sequence signalling, including a list of variables of which a change of value must lead to the detection of an event to be time-stamped and to be saved; means, for each variable, for positioning a marker indicating the quality of the time-stamping of said event; a buffer for the storage, before they are read by client software, of said events to be time-stamped and to be saved, associated respectively with a time-stamping time, said time-stamped events read by the client software being erased from the buffer; means for enabling and for disabling means for saving in a history the values of the variables corresponding to said time-stamped events that have been read.