The chain breaks at the 30th open door — in the van you don't own.
In last-mile the cold chain rarely breaks from a failed reefer. It breaks operationally — across thirty open doors a shift, contractor vans you don't own and can't rewire, and drivers who switch the unit off to pocket reimbursed fuel. Navixy installs plug-in terminals and stick-on BLE sensors in minutes, correlates reefer power-state with the temperature curve, and gives every door, geofence and standstill alert an owner.
The unit never faulted and held its setpoint all shift — but warm-air ingress at each stop ratchets the load up until it breaches, and a once-an-hour logger samples straight past it.
The reefer is fine — the route is the failure mode
On a multi-drop route the unit is usually healthy; the chain breaks operationally — at the door, in the van you don't own, and on the leg with no power or signal. Navixy is built for that leg, and for the rolling, rented fleets that run it.
Averages hide the one stop that cooked the order
A load that reads fine on average can still have ruined the order delivered at stop 19. Per-stop, per-packet evaluation — door-open dwell and rate-of-change between readings — flags the failing drop while the van is still at the curb, not days later as a customer complaint.
In one study >76% of meal-kit boxes arrived with an item above the 4.4 °C zone — per-stop, per-packet evaluation catches what a trip average hides.
You can't rewire a van you don't own
Last-mile capacity is increasingly contractor and rented vehicles that rotate weekly — a bay-day harness install is a non-starter. Plug-in OBD/socket terminals and stick-on BLE sensors deploy in minutes and swap between vans, bound to the route, not the vehicle.
Thirty open doors, not one broken reefer
A single one-minute door opening can raise interior air by up to 60 °F with more than one full air change (USDA). Across 20–40 stops the box never recovers between drops — yet a once-an-hour logger samples straight past the ratchet.
No power, no signal — still a record
Many gig vans carry passive totes, no spare power, and patchy connectivity. Battery loggers with on-board store-and-forward backfill on reconnect, so the audit trail has no holes at the curb, where the most handoffs happen.
Every disputed drop becomes a record
The vehicle-to-recipient handoff is the most vulnerable point for custody and temperature integrity. A per-stop, time-stamped condition and custody record turns a he-said/she-said over which stop failed into proof that settles the claim in minutes.
No open door, no fault — the reefer was simply turned off
Where fuel is reimbursed by route, running the unit less lets a driver resell the saved fuel. There's no door event and no equipment fault — just a slow warm climb on a highway leg. Correlating the reefer's power-state with the temperature curve is the only thing that catches it.
- Loaded chilled at 3 °C — unit running
- Long highway leg, no stops — yet the box starts warming
- Reefer power-state: OFF while cargo is aboard
- Temperature climbs with the unit off — no door event
- Owner alerted; the driver restores the unit
- Delivered back in range — the off-in-transit is on record
- Reefer off
- 1 h 50 m Reefer off
- Peak temp
- 9.5 °C Peak temp
- Exposed
- fuel-saving shutoff Exposed
From a rented van to a per-stop record, in four moves
The same composable platform behind fleet and field operations, configured for the leg you don't own — on hardware that needs no harness and no bay-day.
- 01
Install in minutes, swap between vans
Plug-in OBD / socket terminals and stick-on BLE temperature and door sensors deploy in seconds with no wiring, and Navixy binds the device to the route or asset — so the rules follow the load even as a contractor van rotates out next week.
- 02
Decide per drop, not per trip
IoT Logic fires on door-open dwell and rate-of-change between packets, scopes alerts to geofences and delivery windows so authorized openings stay quiet, and correlates reefer power-state with the temperature curve to expose an off-in-transit unit.
- 03
Act in motion — every alert has an owner
The escalation ladder routes each real alert to a named owner with a first action — notify the driver app, call dispatch, reroute or command — so product stops warming while people would otherwise argue over who calls the driver.
- 04
Prove it per stop
IoT Query assembles per-drop temperature, door events, location and custody handoffs into exportable proof-of-condition and driver scorecards — supporting FSMA and GDP, settling chargebacks, and turning monitoring into operations.
Built for the leg you don't own — minutes to install, an owner for every alert
Last-mile constrains hardware harder than line-haul: minutes to install, swap between vehicles, survive no-power and no-signal. Navixy normalizes plug-in terminals, stick-on BLE sensors, door, reefer power-state and GPS into one data model across 2,500+ device models, then makes the alerts actionable.
- Plug-in OBD / socket terminals + stick-on BLE temp/humidity loggers install in minutes and swap between rotating, rented contractor vans
- Door sensors (BLE magnet or reed), GPS geofences and standstill timers bind 'door open' and 'temp rise' to where it happened and how long
- Reefer power-state (CAN / J1939 or an ignition input) correlated with the in-box temperature curve exposes a unit switched off in transit
- On-board store-and-forward backfills curbside dead zones — parking structures, urban canyons — so per-stop records have no gaps
- Geofence- and window-scoped rules plus an escalation ladder give every real alert an owner and a first action; per-drop scorecards and proof export over an open API, white-label
Geofence- and window-scoping suppresses the dozens of authorized openings, so only the ones that matter raise an alert.
Product stops spoiling while people argue over who calls the driver: every real alert carries an owner and a first action, and the whole ladder is config — JSON over the API, ingested the same way across plug-in and stick-on devices.
Measure the box — not the carrier's word for it
A dedicated device riding in the tote reports calibrated temperature, door and location for every stop — not a carrier-reported estimate — while Navixy still ingests partner and TMS feeds alongside it. For an e-grocer it defends a chargeback; for a specialty pharmacy shipping 2–8 °C direct to a patient, the courier becomes part of the accredited compliance environment and the handoff is the regulated event.
- First-party, calibrated condition data per drop — not carrier-reported estimates
- A per-stop chain-of-custody to a named recipient, exportable as proof
- Records that support FSMA for food and GDP for direct-to-patient pharma
What last-mile & delivery teams ask
See the leg you don't own — and give every alert an owner
Tell us your routes, fleet mix, and cargo. We'll map the plug-in and stick-on hardware, the door / geofence / standstill and reefer-power rules, the escalation ladder, and the per-stop proof-of-condition records — so the chain holds across every drop, even in the vans you don't own.