Temperature-proof delivery: live tracking that survives dead zones
Cold-chain logistics operator. An offline-first driver app that buffers GPS and temperature readings without signal, syncing on reconnect — with a client-facing portal showing live trips and immutable proof trails.
At a glance
- 150+
- Clients served
- 1,550+
- Projects delivered
- 14
- Industries
- 9+
- Years in business
Timeline
14 weeks
Team
5 people
Stack
React Native · SQLite offline sync · Node.js · PostgreSQL · IoT sensor integration
The world this system had to work in
Cold-chain logistics sells proof, not just transport. Pharma and food clients demand a temperature record for every trip, but highway dead zones break phone-based tracking, and paper trip sheets photographed at delivery settle disputes in favour of whoever's paperwork looks better.
The challenge
Clients demanded temperature proof per trip. Drivers' phones lost signal on highway stretches; trip sheets were photographed and emailed, and disputes were settled by whoever's paperwork looked better.
What we found on day one
- Driver phones lost signal for long highway stretches, leaving gaps in GPS and temperature records
- Temperature readings were driver-reported from a dashboard gauge, not machine-captured
- Trip sheets were photographed and emailed; disputes over detention and excursions took weeks to settle
- Clients called the operations desk for status updates because there was no tracking link to share
The solution
We built an offline-first driver app that buffers GPS and reefer-sensor temperature readings locally and syncs in idempotent chunks when connectivity returns, integrated the reefer units' sensors so readings are machine-captured, and shipped a client portal with live trip maps, ETAs and downloadable per-trip compliance reports. Exception alerts for excursions and route deviations reach operations in under a minute.
Offline-first driver app
GPS and temperature buffered on the device; resumable, idempotent sync over weak signal.
Reefer sensor integration
Direct capture from temperature probes, removing driver-reported readings entirely.
Dispatch workbench
Trip creation, vehicle assignment, LR generation and e-way bill data per consignment.
Client tracking portal
Live map, ETA and an immutable temperature trail per trip, with PDF compliance exports.
Exception alerting
Excursion, detour and idle-time alerts routed to operations within a minute.
Fleet analytics
On-time performance, utilisation and per-vehicle cost for the fleet manager.
Integrated with
Our approach, step by step
Built offline-first capture: GPS and temperature buffered locally, chunked uploads with idempotent sync.
Integrated reefer temperature sensors so readings are machine-captured, not driver-reported.
Shipped a client portal with live trip maps, ETA and downloadable per-trip compliance reports.
Added exception alerts — temperature excursions and route deviations reach ops in under a minute.
The outcome
- 100% of trips now carry a machine-captured temperature proof trail that survives dead zones.
- Delivery disputes fell by 70% because every claim is settled from the same immutable record.
- 180 vehicles were live-tracked within 14 weeks, with clients self-serving status from the portal.
- Status calls to the operations desk dropped sharply once clients had tracking links and alerts.
“A pharma client audited us last quarter and we just exported the trip reports. That conversation used to take a week of digging.”
Rajan Pillai
Managing Director, cold-chain logistics operator
More engagements
All 12 case studiesFacing a similar challenge in logistics?
Book a free scoping call — a written rough estimate in 3 days, a fixed proposal in 7.
Book a scoping call with a software architect — not a sales bot.
You'll get a reply within one business day. We'll send a rough estimate in 3 days and a fixed proposal in 7.
Prefer to talk first? Phone, email and office address are on the contact page.