There you are: phone tracking.

• Author: Shackford, Scott
• Position: Citings - Brief article

American citizens should have no expectations of privacy when it comes to location data transmitted by their smartphones.

So the 4th U.S. Circuit Court of Appeals determined in a 12-3 decision at the end of May. The question was whether police can obtain information about where cellphone users are at any given time without getting a warrant. The case revolved around the use of cellphone location data provided by Sprint to track two customers accused of armed robberies in Baltimore.

Under the "third-party doctrine" established by Supreme Court precedents in the 1970s, private data held by third parties--such as phone records--are not subject to the same Fourth Amendment warrant requirements as the records or potential...