dispositif d'interception et de localisation

OBS: Ces dispositifs d'écoute ne devraient pas être utilisés pour enregistrer le contenu des communications (par exemple, l'information contenue dans les courriels). Il existe toute une controverse entourant l'utilisation de ces appareils et la confidentialité dans les communications.
OBS: Par opposition à un enregistreur de numéros composés.

DEF: A method used by the FBI and some step offices that forces a voltage through the line and traces simultaneously ...
CONT: ... if your child has been kidnapped, the FBI will put a trap and trace on your phone in hopes of discovering the telephone number of the kidnappers. There is a similar feature known as a ""pen-register"" that tracks all outbound telephone numbers dialed. If you are a suspected drug dealer, the FBI might perform a virtual stake out where they put a trap-and-trace plus pen-register on your phone in order to discover everyone you call, and everyone who calls you.