Is Apple’s Live Rewind a privacy nightmare? Here’s how the Apple Watch feature really works — and whether it violates your privacy

Apple recently introduced an innovative feature for its Apple Watch Series 12 and Apple Watch Ultra 4 called Live Rewind. This tool enables users to replay the last 15 seconds of audio by double-pressing the Digital Crown, providing a valuable text transcription. Many have raised concerns over potential privacy violations, questioning whether this feature could allow surreptitious audio recording and storage.

However, Apple has provided detailed clarification on how Live Rewind functions, assuring that it does not record or store any audio data. Instead, the feature processes audio within the Apple Watch's Secure Enclave, a separate component of the S11 chip that handles audio and is isolated from the main operating system. This ensures that no part of the OS, including Apple's own applications, can access the raw audio.

Once processed, the audio is deleted from both the device and iCloud. The audio is sent to the user's iPhone for a momentary display of the last 15 seconds before being discarded, preventing any potential long-term storage or unauthorized access. Live Rewind also offers additional privacy protections with transcripts saved as text in the Siri app, which is end-to-end encrypted, ensuring speakers' identities remain anonymous.

Users can opt to have these transcripts stored in the Siri app, but this remains a user-selectable feature. Apple has emphasized the tool's opt-in nature, meaning users must actively enable it, and there's currently no mechanism to compel users to ask for permission before using Live Rewind. The feature's privacy safeguards, such as restricting access to transcripts and the Secure Enclave's role in processing audio, suggest that Live Rewind is less of a privacy nightmare than initially feared.