http://www.wired.com/news/politics/privacy/0,70829-0.html?tw=wn_index_8

Cell-Phone Tracking: Laws Needed

By Ryan Singel|

02:00 AM May, 08, 2006

WASHINGTON, D.C. -- The cell-phone industry and privacy advocates are
calling on Congress to clarify the widespread police practice of using
mobile phones to track suspects without probable cause.

The industry wants clear, standardized rules governing cell-phone tracking,
said Michael Sussmann, a lawyer who represents several cell-phone providers.

"Some orders we see are daisy chains, where we get a subpoena for
information on one person and then they want all the information on the
persons calling or called by them," Sussman said. "We don't think these
orders should include the pizza guy."

Cell providers are happy to help police in emergencies, such as finding a
teen driver who's driven into a deep ditch, said Sussmann during a panel
discussion at the Computers, Freedom and Privacy conference.

Real-time tracking of cell phones is possible because mobile phones are
constantly sending data to cell towers, which allows incoming calls to be
routed correctly. The towers record the strength of the signal along with
the side of the tower the signal is coming from. This allows the phone's
position to be easily triangulated to within a few hundred yards.

But the legal grounds for obtaining a tracking order is murky -- not
surprising since technology often outpaces legislation. The panel agreed
that Congress should write rules governing what level of suspicion cops need
to have before tracking people through their cell phones

The Justice Department has argued that a combination of wiretap laws
governing stored communications like voicemail, plus a law that lets them
learn the phone numbers people dial, allows them to track people without
having probable cause.

Investigators commonly bundle a request to track cell phones with orders to
capture the dialing information of incoming and outgoing calls from landline
or cell phones. Those orders only require investigators to certify that the
information is likely relevant to an ongoing investigation.

Since most of the orders are filed under seal to prevent targets from
learning they will soon be tracked, little was known of the scope of, and
legal justifications for, cell tracking orders.

But eight out of the 10 judges who have published decisions since August
have rejected these legal arguments.

Kevin Bankston, a lawyer with the Electronic Frontier Foundation, said
during the panel discussion: "We've seen an avalanche of Š decisions
rejecting the government's hybrid theory. For several years, the DOJ has
been successfully pulling the wool over the eyes of magistrates."

Some of the legal uncertainty may be resolved soon as the Justice Department
has filed an objection in at least one case, according to Bankston.

Not everyone on the panel thought cell tracking without probable cause was a
bad thing.

"What's all the fuss?" said Catholic University of America law professor
Clifford Fishman. "The government has legitimate reasons to follow people.
This is the technology law enforcement needs to use to get probable cause to
search you, arrest you and throw you in jail."

Fishman, a former prosecutor who spent eight years prosecuting drug crimes
in New York state, said it was reasonable for police to track a suspect's
girlfriend to see if she would lead to his hide-out.

As for concerns that cell phones could be used for widespread tracking since
it requires almost no manpower, panelist and law blogger Orin Kerr said such
fears will dissipate once people understand that calls don't get to their
phones by magic.

"After you get comfortable with the technology, it just becomes more
commonly understood that when I turn this thing on I'm creating data and I
wouldn't be surprised if our view of what the privacy threshold should be
will change over time," Kerr said.

Though the conference program promised that a DEA agent would be on the
panel, the Justice Department nixed his participation at the last minute,
even though he was only booked to talk about how cell tracking information
was useful to prosecutions, according to Bankston.



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