Title 18 › PART II — CRIMINAL PROCEDURE › CHAPTER 206 — PEN REGISTERS AND TRAP AND TRACE DEVICES › § 3127
Defines key words used in this chapter. The words "wire communication," "electronic communication," "electronic communication service," and "contents" use the same definitions found in another part of the law (section 2510). A "court of competent jurisdiction" is a federal district court or court of appeals that has authority over the case, or is in the district where a service provider or a custodian/landlord is located, or is handling a foreign-assistance request; it can also be a state criminal court that state law lets order pen registers or trap-and-trace devices. A "pen register" records dialing and routing info (not message content) and excludes ordinary billing or accounting tools. A "trap and trace device" captures incoming signals that identify the source (not content). "Attorney for the Government" means the government lawyer under the federal criminal rules. "State" includes the 50 states, the District of Columbia, Puerto Rico, and other U.S. territories and possessions.
Full Legal Text
Crimes and Criminal Procedure, Source: USLM XML via OLRC
Legislative History
Reference
Citation
18 U.S.C. § 3127
Title 18, Crimes and Criminal Procedure
Last Updated
Aug 21, 2026
Release point: 119-102