Privacy may be defined as the right of the individual to determine when, how, and to what extent he or she will release personal information. A reasonable expectation of privacy demands that an individual may proceed on the assumption that the state may only violate this right by recording private communications on a clandestine basis when it has established to the satisfaction of a detached judicial officer that an offence has been or is being committed and that interception of private communications stands to afford evidence of the offence.