Pen register
A device or process that traces outgoing signals from a specific phone or computer to their destination. Often used by law enforcement as the advanced counterpart of an outgoing call log. A pen register produces a list of the phone numbers or Internet addresses contacted, but does not include substantive information transmitted by the signals.
See Trap and trace device (compare).
Definition from Nolo’s Plain-English Law Dictionary
A device that makes a record of the phone numbers called from a particular phone. When a court authorizes it, a law enforcement agency may use a pen register in a criminal investigation.
Definition provided by Nolo’s Plain-English Law Dictionary.
August 19, 2010, 5:21 pm
