In this Jan. 13, 2016 photo, Illinois Sen. Daniel Biss, D-Skokie, speaks to reporters during a news conference at the Illinois State Capitol in Springfield. Powerful devices used by law enforcement to mimic cell towers and track phone locations is raising privacy concerns and inspiring legislation nationally to set restrictions for how police can use the technology in criminal investigations.
In this Jan. 13, 2016 photo, Illinois Sen. Daniel Biss, D-Skokie, speaks to reporters during a news conference at the Illinois State Capitol in Springfield. Powerful devices used by law enforcement to mimic cell towers and track phone locations is raising privacy concerns and inspiring legislation nationally to set restrictions for how police can use the technology in criminal investigations. Seth Perlman AP
In this Jan. 13, 2016 photo, Illinois Sen. Daniel Biss, D-Skokie, speaks to reporters during a news conference at the Illinois State Capitol in Springfield. Powerful devices used by law enforcement to mimic cell towers and track phone locations is raising privacy concerns and inspiring legislation nationally to set restrictions for how police can use the technology in criminal investigations. Seth Perlman AP

Legislatures seek limits on phone-tracking technology

May 08, 2016 11:55 AM

UPDATED May 08, 2016 09:48 PM

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