Abstract: A system for monitoring a process controlled by a user. A code generated by user input is paired with a code generated by the process in response to the user generated code. With reference to a master profile of code pairs, in the form of a variable file or look-up table, it is established whether the pair of codes are recognized as an appropriate pairing. In the case that the process generated code has not been recognized a false context state is established and, in the case in which a process generated code has been recognized, either a true context state is established if the recognized process generated code is deemed to have been produced in an appropriate context having regard to a correlation between the user generated input code and the corresponding code of the code master profile pair associated with the recognized process code, else a false context state is established.