https://www.techdirt.com/articles/20191202/09560443483/florida-appeals-court-says-govts-lack-good-faith-cant-save-2012-warrantless-stingray-deployment.shtml

A good ruling [PDF] has been issued by a Florida Appeals Court -- one that not only affirms its earlier warrant requirement for Stingray use, but also reminds law enforcement that the good faith exception isn't as expansive as they think it is. (via FourthAmendment.com)

In 2018, the same court said the use of cell site simulators required warrants. Unlike collecting cell site location info from third parties (which was fine until the Supreme Court's Carpenter decision), Stingray devices turn the government into the second party, coercing location info from phone users by forcing them to connect to law enforcement's fake cell towers.