pen register


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Related to pen register: Trap and trace device

pen register

n.
A monitoring device that records addressing or routing information, such as phone numbers or network addresses, about outgoing electronic communications from a particular source, but does not record the message contents.

[Probably originally a term from electric telegraphy making reference to the pens or styluses that recorded messages on paper tape in the register, or recording device, of the telegraph.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Maryland, (323) the Supreme Court held the third-party doctrine applied to the warrantless installation of a pen register used to record telephone numbers dialed from the defendant's home.
The question in this case was whether the pen register statute applied to the use of cell site simulator to determine a suspect's location via geolocation data obtained from a cell phone.
"The case presents an important constitutional issue and we believe that the 4th Circuit will agree that(the department's)presentation of a pen register order to a judge does not magically turn it into a warrant through the surreptitious inclusion of vague 'probably cause' boilerplate language in the document," H.
(43) This case arose after Baltimore police had the local telephone company install a pen register at its central office to record the phone numbers the suspect dialed, all without a warrant.
They said the phones were monitored by a pen register, which keeps a log of phone numbers on both ends of the conversation, but does not hear the audio.
S04914, a bill introduced in the New York Senate in 2015, sought to include "mobile phone surveillance systems" within the New York pen register statute that granted the court to issue orders.
A court applying the influence approach might look to the federal statute known as the Pen Register statute.
(73.) A pen register is a device or process that "records or decodes dialing, routing, addressing, or signaling information transmitted by an instrument or facility from which a wire or electronic communication is transmitted," as long as the transmission does not include contents.
The Court therefore held that law enforcement agencies do not need a warrant to install what is called a "pen register" on a telephone account that records and reports the numbers called and the duration of the calls, but not the content of the conversations.
Similarly, both the type and volume of communications records at issue in the metadata cases are fundamentally different from the pen register (132) records at issue in Smith v.