---
kind: "unit"
title: "18"
title_heading: "Crimes and Criminal Procedure"
key: "ptII/ch206"
level: "chapter"
label: "Chapter 206"
heading: "Pen Registers and Trap and Trace Devices"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/18/ptII-ch206"
sections_count: 7
---

# Chapter 206 — Pen Registers and Trap and Trace Devices

Title 18 — Crimes and Criminal Procedure › Part II — Criminal Procedure

## Sections

- [§3121. General prohibition on pen register and trap and trace device use; exception](/usc/18/3121.md)
- [§3122. Application for an order for a pen register or a trap and trace device](/usc/18/3122.md)
- [§3123. Issuance of an order for a pen register or a trap and trace device](/usc/18/3123.md)
- [§3124. Assistance in installation and use of a pen register or a trap and trace device](/usc/18/3124.md)
- [§3125. Emergency pen register and trap and trace device installation](/usc/18/3125.md)
- [§3126. Reports concerning pen registers and trap and trace devices](/usc/18/3126.md)
- [§3127. Definitions for chapter](/usc/18/3127.md)