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News (Media Awareness Project) - US: Judges Weigh Phone Tracking
Title:US: Judges Weigh Phone Tracking
Published On:2011-11-09
Source:Wall Street Journal (US)
Fetched On:2011-11-11 06:01:05
JUDGES WEIGH PHONE TRACKING

State and federal authorities follow the movements of thousands of
Americans each year by secretly monitoring the location of their
cellphones, often with little judicial oversight, in a practice facing
legal challenges.

Electronic tracking, used by police to investigate such crimes as drug
dealing and murder, has become as routine as "looking for fingerprint
evidence or DNA evidence," said Gregg Rossman, a prosecutor in Broward
County, Fla.

The use of cellphone tracking by authorities is among the most common
types of electronic surveillance, exceeding wiretaps and the use of
GPS tracking, according to a survey of local, state and federal
authorities by The Wall Street Journal.

The widening practice also presents one of the biggest privacy
questions in a generation: Do police need a search warrant to follow a
person's minute-by-minute movements using satellite or cellphone technology?

The Supreme Court heard arguments Tuesday in the case of Antoine
Jones, whose movements were electronically tracked for a month after
police attached a global positioning satellite, or GPS, device to his
wife's Jeep Grand Cherokee. A drug conviction against the Washington,
D.C., nightclub owner was overturned on appeal because such intrusive
monitoring should require a search warrant, the appeals court said.

The U.S. government argued Tuesday that its use of GPS beepers such as
the type in the Jones case was in the "low thousands" each year.

But other lawyers say the court's decision will likely affect the far
more common police practice of tracking users of the nation's 327
million cellphones.

Al Gidari, a partner at law firm Perkins Coie whose clients include
mobile carriers, told Congress last year that wireless service
providers receive an "astronomical" number of requests for user
records--including location. "It is not uncommon for law enforcement to
ask for a phone to be" tracked every 15 minutes, he said.

Little is known about the practice because tracking requests are
typically sealed from public view. While search warrants are generally
delivered to people whose property is being searched, most people
whose phones are targeted never learn about it. They typically find
out only if they are charged with a crime and their tracking data are
used as evidence against them.

The Journal identified more than 1,000 instances of cellphone tracking
in several large U.S. cities last year through open-records requests
and court documents. The data showed that the practice is a widely and
increasingly used police tool.

The Los Angeles Police Department last year, for example, tracked 295
phones, up 35% from a year earlier, according to department records.
Miami-Dade police said it tracked locations of 130 phones in 2010, up
from 102 in 2009. Federal prosecutors in the Southern District of
Florida, meanwhile, sought cellphone location data 189 times last
year, up 8% from 2009, according to court records.

Magistrate Stephen Smith of Houston, Texas, who approves such
surveillance orders, has been studying the available data and
estimates that federal courts alone issue 20,000 to 30,000 cellphone
tracking orders annually. By comparison, federal and state courts
approved 3,194 wiretaps in 2010, according to federal records.

At issue is whether electronic tracking is comparable to such routine
surveillance as following a suspect in an unmarked police car on city
streets, as the federal government argues.

For years, courts have wrestled with how electronic tracking fits with
the Constitution's prohibition against searching a home, for instance,
unless police can persuade a judge to sign a search warrant.

The federal government says authorities can use electronic
surveillance to track vehicles on public roads without a warrant,
citing a 1983 Supreme Court ruling that declared there is no
reasonable expectation of privacy there.

The government also contends that most cellphone tracking conforms to
a lower legal standard than a search warrant, which requires
authorities show probable cause to suspect connection to a crime.
Instead, the government says cellphone tracking is governed by a 1986
law that requires only that police provide a judge with facts "showing
that there are reasonable grounds to believe" the material sought is
relevant to a criminal investigation.

But federal courts have been increasingly questioning whether these
lower standards should apply to information as sensitive as a person's
location.

State laws and legal precedents also vary. New York and California
courts generally require search warrants to track a phone's location,
but not courts in Florida.

To identify a bank robber, prosecutors in Connecticut obtained records
for 169 phones in 2009 without a search warrant. Prosecutors later
used phone records to show the location of suspects around the time of
the robberies.

Ben Dawes of Hartford, whose phone number was among those listed in
court papers, didn't know he had been tracked until told by a Journal
reporter. "It's not something I'm happy about," he said. Mr. Dawes,
who has no other known connection to the case, said he understood the
need to examine phone records, but wished he had been told. Tom
Carson, a spokesman for the U.S. Attorney's office in Hartford,
declined to comment.

Police can track phones by analyzing signals from towers that connect
cellphone calls or, in some cases, through GPS satellites. The
precision varies. Data from a single tower in a rural area may only
locate a phone within 10 miles. But combining signals from multiple
towers in an urban area can locate a phone within 50 yards.

Tracking is becoming more precise as wireless companies install more
towers. CTIA-The Wireless Association, a trade group, said there were
256,920 cellphone sites in the U.S. in June, up from 178,000 in 2005.
GPS is more precise, but the signal doesn't work indoors and not all
phones use GPS.

As the frequency of tracking has increased, more judges have raised
the need for search warrants. More than a dozen magistrates have
written opinions denying applications for court orders to track
cellphones. The nation's roughly 500 magistrates act as assistant
judges in U.S. District Courts, handling requests for search warrants
and other types of surveillance.

The so-called magistrates' revolt traces its history to a 2005 opinion
written by Magistrate Smith in Texas.

Magistrate Smith said he was puzzled by cellphone-tracking requests
when he was new to the bench: he couldn't find a provision in the law
allowing police to track a phone for as long as 60 days without a
search warrant. To learn more, he visited the U.S. Marshals
surveillance operation and quizzed lawyers at cellphone companies
about government requests.

Prosecutors told him they had authority to track phones with a court
order by combining two portions of the 1986 law: one allows collection
of historical location data; the other allows the real-time collection
of cellphone calling data but not location. Taken together, the
government argued that it could track a cellphone's location without
having to show probable cause.

On Oct. 14, 2005, Magistrate Smith denied a government request in an
opinion that called the government's legal theory "undeniably
creative." But "mixing and matching of statutory provisions," he said,
would create a "new form of electronic surveillance" not envisioned by
the law.

Within six months, nine other magistrates also denied tracking
requests, relying in part on Magistrate Smith's reasoning. Other
magistrates sided with the government, agreeing that cellphone
locators weren't precise enough to require a search warrant.

The magistrate rebellion prompted changes in some jurisdictions. U.S.
Attorneys in Los Angeles, for example, agreed to obtain search
warrants for cellphone location information in federal cases.

The Justice Department recommended that prosecutors obtain search
warrants when tracking phones using such "precise" technology as GPS
or multiple cellphone towers, according to documents dated in 2007
obtained by the American Civil Liberties Union in a
freedom-of-information request. The department continued to argue that
less precise tracking of phones didn't require a warrant.

A year later, the legal battle moved from cellphone tracking to
records of cellphone locations. A group of magistrates in
Pennsylvania, led by Magistrate Lisa Lenihan, wrote an unusual joint
decision in 2008 that denied a government application for historical
records of cellphone locations, saying that cellphones were being used
by authorities as personal tracking devices.

"Americans do not generally know that a record of their whereabouts is
being created whenever they travel about with their cellphones,"
Magistrate Lenihan wrote. "Most Americans would be appalled by the
notion that the government could obtain such a record without at least
a neutral, judicial determination of probable cause."

Most cellphone companies keep historical records of location data for
a year or more, according to a Justice Department document obtained by
the ACLU through the Freedom of Information Act.

The government appealed the magistrates' ruling. Lawyers argued that
cellphones were not tracking devices because the location information
was only accurate within several hundred feet. The appeals court
didn't fully resolve the issue and the government didn't get the
cellphone records it sought.

The Jones case gave new fuel to the debate. In October, 2010,
Magistrate Smith cited the case in denying a federal government
request for 60 days of historical cellphone location records. "Two
months' worth of hourly tracking data will inevitably reveal a rich
slice of the user's life, activities and associations," he wrote. The
government has appealed.
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