Ouch... ""Linking a Microphone" Or: The Story of CVE-2018-4184":
"This bug was trivial to exploit: Link with AppKit — arguably the most important framework on macOS — and *listen in on your users*. No entitlement required."
https://ubrigens.com/posts/linking_a_microphone.html
M$ changes something in the protocol and suddenly nothing works. It happens every so often.
The sensor talks to a smartphone via bluetooth, which I'm sure has all the smartphone stuff - GPS, accelerometer etc. But the sensor itself I think is just flash memory, bluetooth, and an ECG circuit.
FOSS, motorbikes, and photography.