# Trap and Trace Device A trap-and-trace device historically captured the originating number of incoming calls. Statutory usage now covers specified incoming dialing, routing, addressing, or signaling information, excluding content as defined by law. ## Notebook evidence [[Scanned_20260730-1830]], PDF page 6, contains the uncertain phrase `pin trap source`, probably reflecting pen-register/trap-and-trace research. The exact transcription remains preserved in the source. ## Boundary This term describes a collection category and authority, not proof that a particular device was installed or a particular person's communications were captured. ## Related [[Pen Register]] · [[Call Detail Records]] · [[Metadata]] ## Source - [[Scanned_20260730-1830]], PDF page 6.