Try the models.
Change the energy supply, estimate what a light would need, or work through a missing shipment report. These five models use illustrative values and have no connection to live hardware.
Follow the antenna, energy storage, sensing, radio and supporting network.
At the default illustrative settings, reporting depends on harvested energy exceeding idle loss. Open the model to change the assumptions.
Example: 10 W divided by (0.001 W/m² × 0.4) requires 25,000 m² of collection area.
Example: making 10 µJ of computation ten times cheaper reduces a 90 µJ operation to 81 µJ, not to 9 µJ.
A missing report alone does not identify its cause. Gateway checks, neighbouring tags and physical inspection provide additional evidence.
Where the assumptions come from
The controls explore constructed models. Source notes and the argument they support are in the accompanying essay.