On Sunday night, she opened the app at 1 AM, unable to sleep. She tapped on the “Activity Timeline” feature, which aggregated all sensor data into a single graph. The past seven days showed a jagged line—her morning showers, her 6 PM cooking, her husband watching news at 9. But overlaid on that was a second, fainter line. A ghost line.

The first anomaly appeared on Thursday. She was boiling noodles when a push notification buzzed her phone: Unusual humidity detected in Bedroom 2. Possible mould risk. Schedule inspection?

And then, beneath that, a button she had never noticed before: Initiate Live Contact.