How DwellGuard Works

Spoken Constraint Relay & Sequential Authority Architecture

Freight delay tools frequently stop at sending an alert or placing an uncoordinated call. DwellGuard establishes a strict sequential authority chain powered by the Spoken Constraint Relay: the driver's spoken boundary visibly rewrites the dock request before call two is placed, and the dock's commitment returns as the same versioned plan on the driver's phone.

1. Dispatcher Limits: The dispatcher freezes acceptable arrival times, maximum allowable accessorial fees, and a hard 2-call budget.
2. Driver Verification: CALL-E calls the late driver to verify their actual workable check-in window and asks if they authorize automated scheduling inside that interval.
3. Interval Reshaping (Plan Rail): The driver's verified window is mathematically intersected with dispatcher limits. Impossible times fade on the Plan Rail, and the dock request is rewritten with the real overlap.
4. Dock Commitment: CALL-E calls the receiving dock to confirm an explicit time and designated door within the driver's approved range, verifying fee boundaries.
5. Causal Appointment Proof & Driver Handoff: When confirmed, a deterministic, privacy-safe Causal Appointment Proof (with SHA-256 hash and matching display ID) is generated. The official appointment pass is delivered directly to the driver's mobile page for tap acknowledgment.