en.wikipedia.org/wiki/Pen_register

A pen register, or dialed number recorder (DNR), is an electronic device that records all ... The United States statutes governing pen registers are codified under 18 U.S.C., Chapter 206. ... In Katz v. United States (1967), the United States Supreme Court established its "reasonable expectation of privacy" test. It overturned ...

www.eff.org/cases/cellphone-tracking-cases-usa-v-pen-register

EFF fought the government's attempts to track the location of a mobile phone user without sufficient evidence. The government had argued that it did not need to ...

www.law.cornell.edu/uscode/text/18/3121

U.S. Code; Notes; Table of Popular Names ... A government agency authorized to install and use a pen register or trap and trace device ... V, § 104(3)(A), Mar.

www.justice.gov/opa/press-release/file/956486/download

Apr 12, 2017 ... signed by this Court in the matter of United States v. Peter Yuryuvich ... Nonetheless, the United States is applying for a Pen Register and Trap ...

epic.org/foia/doj/pen-reg-trap-trace

U.S. Defends Privacy Shield, But Fails to Comply with Privacy Commitments: The Department of Commerce has told the President of the European Parliament ...

www.cybertelecom.org/security/ecpatrapandtrace.htm

Jun 12, 2017 ... Transactional Records: Pen Registers & Trap and Trace ... call and captured by a pen register. Smith v. Maryland, 442 U.S. 735, 743-44 (1979).

www.courtlistener.com/opinion/2567128/in-re-application-for-pen-register-and-traptrace

Oct 14, 2005 ... Basically, a pen register is a device or process which records the telephone numbers of outgoing .... aff'd, 891 F.2d 904 (5th Cir.1989); U.S. v.

www.cdt.org/files/security/000404amending.shtml

For that reason, pen registers and trap and trace devices are very helpful to law ... Smith v. Maryland, 442 U.S. 735, 742 (1979). Accordingly, the pen register and ...

www.repository.law.indiana.edu/cgi/viewcontent.cgi?article=1850&context=facpub

Applegate, John S. and Applegate, Amy, "Pen Registers After Smith v. Maryland" ... e.g., NAACP v. Alabama, 357 U.S. 449 (1958) (requiring political organi-.