Reticles lock to the eight supine bony prominences. ΔT is measured against the contralateral site, or against peri-site skin where no contralateral pair exists. Thresholds are site-configurable; shown here at 1.0 °C watch / 2.0 °C alert.
NPIAP categories. Int8 quantized, CPU-bound on the Pi 5 — no accelerator in this build.
An 8 × 8 lattice over the dominant zone, traversed in knight's-tour order so each sampling step lands non-adjacent to the last. Decorrelates the sequence from local thermal drift.