When Apple executive Craig Federighi described a new
location-tracking feature for Apple devices at the company’s
Worldwide Developer Conference keynote on Monday, it sounded — to
the sufficiently paranoid, at least — like both a physical
security innovation and a potential privacy disaster. But while
security experts immediately wondered whether Find My would also
offer a new opportunity to track unwitting users, Apple says it
built the feature on a unique encryption system carefully designed
to prevent exactly that sort of tracking — even by Apple itself.
Just a brilliant feature.