Fleet tracking + passenger check-in platform
Track your routes and boardings – with a single phone
Sentinel-Locate is Diavox's fleet-tracking and passenger check-in platform for transport operators. The driver's phone is the only hardware: a live map, NFC/RFID boarding registration, GDPR-friendly data handling (we store no employee names), a client portal and reports – priced by module and headcount.
How the platform works
Hardware-free, in four steps – from setting up the phone to the driver's boarding scans, the live map and the client report.
1. Set up the phone
We install the driver app on an Android phone assigned to the bus – no expensive onboard GPS unit, no fitting. Optionally a cheap HID RFID reader connects to it.
2. Driver: boarding scans + GPS
The passenger taps a card (Web NFC or RFID) while the phone's GPS reports the position every ~10 seconds. With no signal the scans wait in a local queue, then sync automatically.
3. Live data on the map
Each route's real-time position appears instantly on the live map (MapLibre + OpenStreetMap), with automatic stop matching and delay alerts.
4. Client report
The client sees the boardings in its own portal and receives an accurate, name-free headcount report – with CSV/XLSX export and billing-base data.
Six modules, one platform
Sentinel-Locate is built from six separately priceable modules – switch on only what your fleet needs.
Live tracking
The bus phone's GPS pings every ~10 seconds; a live MapLibre + OpenStreetMap map, automatic stop matching (50 m) and ETA – with no Google Maps licence.
Passenger check-in (NFC/RFID)
Card boardings on the driver's phone (Web NFC) or one cheap HID RFID reader. Offline-first: scans and GPS wait in a local queue, then sync without duplicates – no boarding is ever lost.
Client portal
Each client company logs into its own isolated portal and sees strictly its own boardings and headcount reports, with CSV/XLSX export. Airtight multi-tenant isolation.
Reports and export
Operator and client reports: headcount per route and day, route performance, billing-base data – in XLSX and CSV.
Fuel and mileage
Per-vehicle fuel profile and fill-ups, mileage from GPS and manual odometer, fuel cost and consumption tracking.
Notifications
Delay and incident emails to the client, scheduled report delivery, and automatic GPS-feed-outage detection that alerts if a vehicle stops reporting.
Two things it does better than classic fleet trackers
Sentinel-Locate is not another GPS box. The two biggest differences: its approach to privacy and its cost of entry.
PII-free by design – a built-in GDPR advantage
The system stores only the card ID, the GPS coordinate and the timestamp – no employee names, no personal data. Mapping a card to an employee stays on the client company's side, based on its own records.
The phone is bound to the bus, not the driver, and there is no tracking outside the shift. This is a genuine privacy advantage over systems that store personal data: less data, less risk, simpler compliance.
Cheap to invest, rich in software
The hardware is the phone itself – complemented by at most one cheap RFID reader per bus. A fraction of the cost of classic telematics GPS-box fleets, with no multi-year hardware lock-in.
The richness lives in the software: a live map, offline check-in, a client portal, reports, fuel tracking and notifications – on one platform, split into modules.
Why Sentinel-Locate?
The phone-first approach runs through the whole platform – from rollout to pricing.
Modular, per-headcount pricing
Buy only the modules you need, priced on the actual headcount transported – the price scales with the client, with no oversized subscription.
Scales to many clients
One platform, many client companies – each with fully isolated data. A new client can be added quickly and safely.
Fast, hardware-free rollout
Android-based, remotely managed setup: no on-site fitting, no driver-dependent hardware – a new operator can go live in days.
Open map, no Google dependency
MapLibre + OpenStreetMap – no per-map licence fee and no vendor lock-in to a map provider.
Self-hostable
Deploy it on your own infrastructure (Proxmox or a VPS), or let Diavox host it for you – your data stays where you want it.
Proven in live operation
Not a prototype: it has run at Ventona Trans for 4+ years, across over a million boardings, in Penny and Tesco employee shuttles.
Proven in live operation
Sentinel-Locate has run on Ventona Trans's employee shuttles for years – on real data, serving major retail chains (Penny, Tesco).
- Years in production
- 4+
- Boardings tracked
- 1 000 000+
- Daily routes live
- 60+
- PII-free by design
- 100%
These shuttle operations already run on Sentinel-Locate
Our reference: Ventona Trans
Ventona Trans has run its employee shuttles on Sentinel-Locate for years – the platform's live, proven testing ground.
For four years we have tracked our routes and recorded boardings with Sentinel-Locate – with a single phone per bus, no expensive onboard hardware. It runs reliably, even offline, and our clients get accurate, name-free headcount reports.
Kiss GáborOperations Lead, Ventona TransOn the live map I can see where the buses are at any moment, and the system alerts us immediately if a route runs late. We have recorded over a million boardings with it – daily operation is stable and reports export in minutes.
Tóth MártaDispatcher, Ventona Trans
See your fleet running live on Sentinel-Locate
Request a demo or a quote – we show you the platform and put together a module package tailored to your fleet.
Get in touch
Have a question about Sentinel-Locate or want a demo? Send us a message or give us a call.
- info@diavox.hu
- Phone
- +36 30 555 0000
- Address
- Budapest, Hungary
- Availability
- Mon–Fri: 9:00–17:00