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Pen register |
[perhaps from the original use of a pen to mark the dots or dashes used in counting the numbers dialed]
: a device that registers the numbers dialed from a telephone
compare wiretap
A court order is always required for the use of a pen register in a criminal investigation, but such use has not been considered a search or interception of communication by the U.S. Supreme Court. Some states have disagreed and discern a privacy interest in such information.
| Based on Merriam-Webster's Dictionary of Law ©2001. Merriam-Webster, Incorporated Published under license with Merriam-Webster, Incorporated. http://www.m-w.com |
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