Pick a story (set-up, an empty room, a turnover day, a break-in, damp air) and watch the device and your app side by side. Your app shows the AC and the property, never the person.
This is a concept prototype. Occupancy is used only on-device to drive the AC — the owner's app shows setup, the AC, energy, and property state, never a live record of the guest's movements (security alerts fire only when the property is armed and vacant). The device also can't read the guest's remote; it infers AC state from the room's climate. Every behaviour maps to the firmware roadmap and occupancy-fusion design; figures are illustrative.