“Defending Privacy, Supreme Court Says Warrants Generally Are Necessary to Collect Cell Phone Data”

This is fantastic news.

Justice Kennedy’s dissent, however, shows the dangerous thinking on the other side:

“‘Cell-site records,’ he wrote, ‘are uniquely suited to help the government develop probable cause to apprehend some of the nation’s most dangerous criminals: serial killers, rapists, arsonists, robbers, and so forth.’”

Indeed. That same data is intensely personal, however, and there’s nothing stopping law enforcement from obtaining it, after getting a judge to agree that there’s a reasonable foundation to inspect it.