Open Issues

Design questions

1. Timing of enclosure breaches. Teardown shows that dust or water got into a sealed compartment, but not at which level or step. Water can also carry D medium further in. One possible fix is a separate verification unit taken straight to a claimed level and then torn down. See Test Tiers.
2. Combining multiple units. An interim rule (per-unit codes plus a headline code) is defined in Reporting. Revisit it once U: Usage defines a wear metric.
3. Calibration. The doses and thresholds are starting points. After testing a range of devices, adjust them so real devices spread across levels 1–9. If almost everything scores 0 or 9, the scale is set wrong.
4. Home vs lab equivalence. Test the same model with both kits and compare.
5. Cycling consistency. Hand cycling varies between testers. A motorized cycling rig with a fixed speed and range would make results more repeatable.
6. Real-wear units. Units with real wear are written UX and cannot contribute to IDRS until a wear metric maps real wear onto U levels. See U: Usage.
7. Objective rough-motion threshold. r currently relies on what is heard or felt. A sound-level comparison against the baseline recording could replace it. See Measurements.
8. Definitions to confirm. The definitions of sealed compartment, rigid section and tolerance were written during the v0.2 restructure, not taken from the drafts, and need the author’s confirmation. See Definitions.
9. Future water groups. Salt and pool (chlorinated) water are planned as future groups.

[TBD] register