The Maryland Court of Special Appeals rejected the state of Maryland’s argument that anyone turning on a phone was “voluntarily” sharing their whereabouts with the police. And the 73-page opinion also harshly rebuked Baltimore police for trying to conceal their use of Stingrays from the court. The panel of judges stated that “cellphone users have an objectively reasonable expectation that their cellphones will not be used as real-time tracking devices, through the direct and active interference of law enforcement.”
— source theintercept.com | 2016