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.]
References in periodicals archive ?
This isn't a one-off where one officer, by mistake, decided to ask for a pen register order," said Stichel, of Astrachan Gunst Thomas PC in Baltimore.
A pen register was a device installed at the phone company to record the numbers dialed from a specific telephone.
either alone or in combination with the pen register and trap and trace statute, Title 18 at sections 3121-3127 (hereafter referred to as the pen/trap statute).
41) That discussion began with the rather startling statement that the appellants' argument--that the pen register search violated section 23--presented a question of first impression.
This includes the right to use a so-called pen register, which reveals to the police the number of every incoming call on the phone.
4) Because law enforcement officials with pen register or trap-trace authority would not obtain the content of the target's communications, a much lower standard for court authorization existed.
This overflight case is somewhat different from the pen egisterf case since no conscious and limited surrender of security was made to curious civilian pilots; but the Greenwood Court might have cited another instance more dosely congruent with the pen register case.
cover physical searches, (163) pen register and trap and trace devices,
The Pen Register Act--Interception of Noncontent Communication Attributes 3.
36) Prior to the USA PATRIOT Act, pen register and trap and trace orders required showing that there was relevance to an investigation and that there was reason to believe that the targeted line was being used by an agent of a foreign power or someone in communication with such an agent under certain circumstances.