10 years ago, the Supreme Court ruled, in the case of IR devices, that, although they were passively observing, government needed to get a warrant to use them. Technological adgancements shall not obviate expected constitutional protections. People expect privacy and advances that did not exist then cannot take advantage of loopholes like that.
So, I hope these people are getting warrants, or I expect to see hundreds of law enforcement officials going to jail.
By the way, as people move more and more of their lives into virtual, online arenas, they take with them the same expectation of privacy. The Supreme Court should similarly require warrants for all that, too, closing the loophole that, since it's at some coompany, "you have no expectation of privacy."
People create this virtual presence for their own convenience, not so government can have a virtual warrantless panopticon.