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/part-II/chapter-206

18 U.S. Code Chapter 206 - PEN REGISTERS AND TRAP AND TRACE DEVICES ... 3121 - General prohibition on pen register and trap and trace device use; ...

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.law.cornell.edu/uscode/text/50/1842

50 U.S. Code § 1842 - Pen registers and trap and trace devices for foreign .... (V). in the case of a provider of local or long distance telephone service, any local ...

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 ...

scholarship.law.duke.edu/cgi/viewcontent.cgi?article=2632&context=dlj

of a Pen Register or Similar Mechanical Device, 538 F.2d 956 (2d Cir. 1976), cert . granted sub nom. United States v. New York Tel. Co., 429 U.S. 1072 (1977) ...

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).

scholarlycommons.law.northwestern.edu/cgi/viewcontent.cgi?article=6136&context=jclc

In the case of Smith v. Maryland6 the United States. Supreme Court resolved the issue by holding that the installation and use of a pen register is not a.