(March 7, 2017, 3:02 PM EST) -- CHICAGO — In an amicus curiae brief filed Feb. 28 in the Seventh Circuit U.S. Court of Appeals, two nonprofit public advocacy groups argue that smart electric meters installed in an Illinois city present concerns under the Fourth Amendment to the U.S. Constitution because of the volume and specificity of information collected about customers’ in-home activities (Naperville Smart Meter Awareness v. City of Naperville, No. 16-3766, 7th Cir.)....