"Appeals Court Rules Against Warrantless Cell-site Simulator Surveillance Law enforcement officers in Washington, D.C. violated the Fourth Amendment when they used a cell site simulator to locate a suspect without a warrant, a D.C. appeals court ruled on Thursday. The court thus found that the resulting evidence should have been excluded from trial and overturned the defendant’s convictions... The court determined that the use of a cell-site simulator to track and locate Jones was in fact a “search,” despite claims to the contrary from the prosecution..." https://www.eff.org/deeplinks/2017/...-warrantless-cell-site-simulator-surveillance