Wall-Touch Response algorithm
Touch Signature
Matches safe nudges to the size of steps people actually use on the wall thermostat.
These algorithms exist for the exact household fight AC Defender is built for: someone keeps raising the thermostat, but the room still needs to come back to your temperature without starting a visible duel.
The short version
Matches safe nudges to the size of steps people actually use on the wall thermostat.
What it watches
The recent real wall-thermostat steps (their median size) inside the retention window.
How it decides
With enough recent steps and a room still inside the signature safety band, it learns the median wall-step size, clamps it between the min and max signature step, and caps safe nudges to that size. Too-warm rooms clear the signature so direct cooling resumes.
What it changes
Lowers the per-command nudge size used by Natural Walkback.
Safety boundaries
- Uses the real inputs listed above. It does not invent thermostat, weather, usage, or sensor state.
- Changes only the output listed above. Thermostat-affecting work goes through Home Assistant or returns a real error.
- The global AC Defender rules still apply: the website target remains the floor for cooling commands, the worker keeps refreshing real Home Assistant state 24/7, and comfort/safety rules are not bypassed by decorative timing.
Settings
TouchSignatureEnabledTouchSignatureTriggerTouchesTouchSignatureRetentionMinutesTouchSignatureMinimumStepCelsiusTouchSignatureMaximumStepCelsiusTouchSignatureSafetyBandCelsius
Where to see it
- Defense page: live card with state, verdict, evidence, and metrics.
- Guide page: generated from the same guard catalog entry.
- Source:
Guards/GuardCatalog.csdescribes this page; the implementation is coordinated byServices/DefenderStateStore.csandServices/AcDefenderService.cs.
Failure modes
If Touch Signature cannot obtain one of its required real inputs, it reports a blocked, held, or unavailable result and leaves the background worker’s Home Assistant refresh running. It never fills a missing room reading, audit event, weather sample, usage value, or device state with a simulator value. If a real Home Assistant command is rejected, the user sees the service’s actual error and the article’s surface remains available for recovery.
Security considerations
This feature consumes only the configured Home Assistant entity data, local settings, and the audit context named above. Tokens and credentials stay in the server environment; the static documentation site does not collect analytics, transmit search text, or embed third-party assets. Logs and exports should be reviewed before sharing because real entity names and timestamps can identify a household.
Verification
Verify the shipped behavior at the feature’s live page or endpoint, then run the repository’s documented build and test commands. Confirm the real-input and real-error paths, keyboard access, reduced-motion behavior, and a 390 px viewport without horizontal overflow. Record the exact commit and workflow result when publishing a release; a static screenshot alone is not proof of a live Home Assistant command.
Suggested articles
- Feature briefs — find every documented surface and guard.
- Defender Logic — follow the complete decision cycle and its bypass rules.
- Settings — inspect persisted configuration, language modes, and safety limits.