The researcher said these issues are already known, at least since a 2019 academic paper that studied Apple’s Bluetooth low energy protocol and concluded that there are “several flaws” that “leak device and behavioral data to nearby listeners.”

“Individually, each flaw leaks a small amount of information, but in aggregate they can be used to identify and track devices over long periods of time,” the researchers wrote in the paper.

That’s why, Bochs said, they think Apple won’t do anything about this.