In re United States

497 F. Supp. 2d 301, 2007 U.S. Dist. LEXIS 52009
CourtDistrict Court, D. Puerto Rico
DecidedJuly 18, 2007
DocketMisc No. 07-28 FAB/BJM
StatusPublished
Cited by2 cases

This text of 497 F. Supp. 2d 301 (In re United States) is published on Counsel Stack Legal Research, covering District Court, D. Puerto Rico primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
In re United States, 497 F. Supp. 2d 301, 2007 U.S. Dist. LEXIS 52009 (prd 2007).

Opinion

[302]*302 OPINION AND ORDER

BRUCE J. McGrVERIN, United States Magistrate Judge.

I. Introduction and Background

The government has filed sealed applications requesting orders under 18 U.S.C. §§ 2703 and 3122, directed at two cellular telephone service providers, for the installation and use of pen register and trap and trace devices, Enhanced Caller ID special calling features, and the capture of limited geographic or cell site information, all for a period of sixty days from the date of the order. (Docket No. 37, 39). The court has issued sealed orders granting the government’s applications as to all requests except the requests to obtain limited geographic and cell site information, which was denied without prejudice for the government to resubmit its application with a showing of probable cause pursuant to Fed.R.Crim.P. 41. (Docket No. 38, 40). I am writing this opinion to explain my reasoning in denying the government’s request for limited geographic and cell site information upon a showing of less than probable cause, since similar applications have been presented before in this district and likely will be presented again. The opinion will not be filed under seal because its reasoning does not hinge on any details regarding the specific cell phones at issue or on the government’s underlying criminal investigation, and such details need not and will not be disclosed. See In re Application for Pen Register and Trap/Trace Device with Cell Site Location Authority, 396 F.Supp.2d 747, 748-49 (S.D.Tex.2005) (“S.D.TexI”).

A. Cell Phone Technology

By way of necessary background, cellular telephone networks function by transmitting and receiving signals to and from towers placed in geographic coverage areas, or “cells.” As a cell phone and its user move from place to place, the cell phone’s signal is sent automatically to the tower that provides the best reception. The signal continues to be sent at all times while the cell phone is turned on even if a call is not taking place. Cellular telephone companies typically have the technical means to keep track of and store the cell phone tower that is receiving the signal of a cell phone at any given point in time. See In the Matter of the Application of the United States of America for an Order [303]*303Authorizing the Disclosure of Prospective Cell Site Information, 412 F.Supp.2d 947, 949-50 (E.D.Wis.2006) (“E.D.Wisc.1”). Moreover, by a process of triangulation from various cell towers, it is possible to track the movements of a target cell phone and thereby pinpoint the location of a person using that phone. See S.D.Tex. I, 396 F.Supp.2d at 751.1

B. The Government’s Applications

In the present case, the government self-imposed certain limitations on the type of geographic information that it wants the cell phone service providers to disclose. In particular, the government’s requests were limited to: (1) information regarding cell site location that consists of the tower receiving transmissions from the target phone; (2) tower information tied to a particular call made or received by the cell phone user; (3) information transmitted from the cell phone service provider to the government; and (4) information from the origin and termination of calls and, if reasonably available, during the progress of a call that is not initiated by the government itself. The government’s requests specifically did not seek disclosure of: (1) any cell site information that might be available when the user’s cell phone was turned on but a call was not in progress; (2) information that would allow the government to triangulate multiple tower locations and thereby pinpoint the location of the user; and (3) GPS information on the location of the user, even if that technology is built into the user’s cell phone. (Docket No. 37, 39). Importantly, the government’s requests for cell site information are prospective in nature — that is, the application seeks capture and disclosure of “geographic location information ... for a period not to exceed sixty (60) days from the date of this Court’s order.” (Docket No. 37, 39, p. 3).

C. Prior Decisions

To date, no circuit court of appeals has addressed whether a district court may order a cell phone service provider to disclose to the government “prospective” cell site information upon a showing of less than probable cause. However, several district courts have addressed — and are divided over — the issue. Fortunately, magistrate and district judges on both sides of the issue have written comprehensive and well-articulated opinions.

Decisions granting requests for limited prospective cell site information include: In re Application for an Order Authorizing the Extension and Use of a Pen Register Device, 2007 WL 397129 (E.D.Cal. Feb.1, 2007); In re Application of the United States for an Order for Prospective Cell Site Location Information, 460 F.Supp.2d 448 (S.D.N.Y.2006) (“S.D.N.Y.II”); In the Matter of the Application of the United States of America, 433 F.Supp.2d 804 (S.D.Tex.2006) (“S.D.Tex.II”); and In re Application for Disclosure of Telecommunications Records, 405 F.Supp.2d 435 (S.D.N.Y.2005) (“S.D.N.Y.I”).

Decisions denying the government’s requests (although sometimes for different reasons) are at this point the majority and include: In the Matter of the Application of United States of America for an Order Authorizing the Disclosure of Prospective Cell Site Information, 2006 WL 2871743 (E.D.Wis. Oct. 6, 2006) (“E.D.Wisc.11”), affirming decision of magistrate judge reported at E.D.Wisc. I, supra; In the Matter of the Application of the United States

[304]*304of America, 441 F.Supp.2d 816, 827-37 (S.D.Tex.2006) (“S.D.Tex.II”); In Matter of Application for an Order Authorizing the Installation and Use of a Pen Register and Directing the Disclosure of Telecommunications Records, 439 F.Supp.2d 456 (D.Md.2006) (“D.Md.II”); In the Matter of the Application of the United States of America, 2006 WL 1876847 (N.D.Ind. July 5, 2006) (“N.D.Indll”); In the Matter of the Application of the United States of America, 416 F.Supp.2d 390 (D.Md.2006) (“D.Md.I”); In the Matter of the Application of the United States of America, 415 F.Supp.2d 211 (W.D.N.Y.2006) (“W.D.N.Y.”); In the Matter of the Application of the United States of America for an Order Authorizing the Release of Prospective Cell Site Information, 407 F.Supp.2d 134, 134-35 (D.D.C.2006) (“D.D.C.II”); In re the Applications of the U.S. for Orders Authorizing the Disclosure of Cell Cite Information, 2005 WL 3658531 (D.D.C. Oct. 26, 2005) (“D.D.C.I’’); and In re an Application of U.S.A. for an Order (1) Authorizing the use of a Pen Register and a Trap and Trace Device and (2) Authorizing Release of Subscriber Information and/or Cell Site Information, 384 F.Supp.2d 562, and on reconsideration, 396 F.Supp.2d 294 (E.D.N.Y.2005); see also, S.D.Tex I, supra.2

D.

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Bluebook (online)
497 F. Supp. 2d 301, 2007 U.S. Dist. LEXIS 52009, Counsel Stack Legal Research, https://law.counselstack.com/opinion/in-re-united-states-prd-2007.