iPhones listen for Siri without displaying a microphone warning in the notification bar.<p>Only after Siri is activated does the notification appear. This must mean that the notification and the microphone are independently operated and not a true signal of whether the microphone is actually listening or not, no?<p>Can someone explain how this feature works and why this is or is not an issue?
Here's a decent explanation: <a href="https://hackernoon.com/how-does-hey-siri-work-without-your-iphone-listening-to-you-at-all-times-827932do" rel="nofollow">https://hackernoon.com/how-does-hey-siri-work-without-your-i...</a><p>Basically the microphone 'listens' for an audible key using the co-processor, but doesn't 'hear' or record anything, there's no audio information being written to disk or memory.