Case Study: How bpost Tracks 93,000 Roll Cages with UHF RFID + BLE Hybrid Tags

Belgian postal and parcel operator bpost moves more than half a million parcels every day, and the workhorse behind that flow is a fleet of 93,000 metal roll containers — wire-mesh cages that shuttle parcels within and between sorting and distribution centers. In September 2026, bpost and its suppliers made that fleet fully visible with hybrid UHF RFID + BLE tracking tags. The published results are hard to ignore: an 85% reduction in new cage purchases, a project that has already paid back its investment, and a nomination for Transport Innovation of the Year at the Postal & Parcel Technology International Awards 2026.

This case study breaks down how the system works — and, more usefully for buyers, what it teaches anyone evaluating RFID for UHF RFID-based returnable asset tracking, from roll cages and dollies to pallets and reusable totes.

The Asset Pool That Never Stands Still

Returnable transport items (RTIs) are notoriously hard to manage because they never stay put. A roll cage cycles through sorting slides, staging areas, loading docks, trucks, and partner or customer sites — sometimes dwelling for weeks. Before the project, bpost relied on manual counting for an asset pool spread across a national network. The consequences are familiar to anyone who runs RTI logistics: some sites accumulate idle cages while others run short, nobody can say how many cages are actually in circulation, and the company keeps buying new cages to compensate for assets it already owns.

The project brief was therefore not "track one cage" but "see the whole pool, all the time" — inventory, arrivals and departures, movements between locations, dwell times, and the condition of both containers and tags.

One Tag, Two Radios

Each cage carries a customized Viking Hybrid beacon developed by tag manufacturer Beontag. The housing pairs two very different radios in one sealed unit:

The physical package matters as much as the radio spec. The vendor datasheet lists a 68 × 47 × 28 mm IP68-sealed housing that snap-fits onto cage mesh wire up to 5 mm in diameter, with read performance engineered for metal surfaces — no small detail, since a wire-mesh cage is one of the least forgiving RF environments a tag can live on. Getting reliable reads off metal is exactly the design problem behind on-metal RFID tag construction, and it is why standard labels that work fine on cardboard fail on cages, racks, and stillages.

Identity at the Gates, Location in Between

The architecture assigns each technology the job it does best. Passive UHF RFID handles the high-speed chokepoints: when a batch of cages rolls through a portal at a sorting center, fixed readers capture every tag ID in bulk, with no batteries and no manual scanning. That solves the "who passed through, and when" problem.

BLE covers everything the portals can't see. Battery-powered beacons broadcast to gateways deployed across buildings and vehicles, giving zone-level presence in staging halls, trucks, and outdoor yards. Mobile devices in the network add GPS data, so cages parked at customer sites don't drop off the map. Together, the three data streams give bpost something no single technology delivers on its own: continuous pool-level visibility.

The back end is where raw reads become decisions. Solution provider Lyngsoe Systems reports that its platform aggregates the three data streams, filters duplicate and neighboring-read noise, and turns the result into business events — cage X left site Y, dwell time exceeded at site Z. The asset software tracks the containers themselves rather than the parcels inside them, maintaining per-asset history, movement records, dwell statistics, and even tag health, so a failing beacon surfaces before it becomes a blind spot. Industry discussion at RAIN events has repeatedly emphasized the same lesson we covered in our RAIN in Action Madrid recap: raw reads are worthless until they are de-duplicated and resolved into events a dispatcher can act on.

The Results, in bpost's Own Numbers

According to the case study published by Beontag, real-time visibility into the number and location of containers allowed bpost to use its existing fleet far more efficiently — cutting new container purchases and the associated budget by 85% since the project began. Lyngsoe reports the investment has already paid for itself.

The 85% figure deserves a precise reading: it is a reduction in new purchases, not a claim that 85% of cages were being lost. The mechanism is utilization — finding idle cages, rebalancing surpluses between sites, forecasting shortages ahead of peaks, and holding internal and external sites accountable for cages parked on their premises. In other words, the savings came from operating data the company finally had. For a deeper look at how UHF RFID changes inventory truth in a warehouse setting, see our warehouse inventory accuracy case study.

Project coverage also outlines the next step: binding individual parcels to the cage carrying them, so every cage movement creates tracking records without scanning parcels at each node — and investigating BLE angle-of-arrival positioning for indoor precision.

If You're Evaluating RTI Tracking: Four Takeaways

1. Start with the chokepoints; add BLE only where the asset roams. Passive UHF RFID at dock doors and portals is the economical foundation. Hybrid tags pay off when your assets dwell in uninstrumented zones — yards, customer sites, shared vehicles — and idle-asset costs justify battery-powered beacons. Note that this RFID + BLE combination is a different animal from the dual-frequency RAIN + NFC tags we compared in the dual-frequency tag guide: both blend two radios in one housing, but for completely different jobs.
2. Metal demands on-metal engineering. A cage, dolly, or stillage is an RF mirror. Tags for metal assets need purpose-built antenna design and isolation layers, or read rates collapse at exactly the portals you depend on.
3. Tag lifetime is an asset-lifetime decision. bpost's beacons carry a non-replaceable battery rated beyond ten years — matched to how long a roll cage stays in service. Match the tag's life to the asset's life, because re-tagging 93,000 cages is a project in itself.
4. Budget for the data layer, not just the tags. Filtering, event resolution, and asset software are where reads become savings. A pilot that only proves "the reader sees the tag" has not tested the part that delivers ROI.

For buyers whose RTI program needs custom housings, on-metal labels, or hybrid form factors, this is also a reminder of where a tag factory fits: the radio choices are standard components, but the enclosure, mounting, and metal performance are custom engineering — the territory covered by specialty RFID tag programs and OEM/ODM production.

FAQ

What is an RFID + BLE hybrid tag?

A single housing that combines a passive UHF RFID chip — battery-free, read at gates and portals — with a battery-powered Bluetooth Low Energy beacon that broadcasts to gateways and mobile devices over longer distances. The passive side handles identification at chokepoints; the BLE side adds zone-level location everywhere else.

Why did bpost need hybrid tags instead of passive RFID alone?

Roll cages spend much of their life away from controlled read points — in buildings, trucks, and customer sites with no reader infrastructure. Passive RFID covers the gates; BLE and mobile-device GPS keep the rest of the asset pool visible instead of only the cages that cross a portal.

What results did bpost report?

Per the published case study from Beontag and Lyngsoe Systems, bpost cut new roll cage purchases and the associated budget by 85% through better utilization of its existing fleet. Lyngsoe reports the project has paid back its investment, and it was nominated for Transport Innovation of the Year at the Postal & Parcel Technology International Awards 2026.

Do hybrid tags make sense for smaller asset pools?

If losses concentrate at controlled doors and docks, passive UHF on-metal labels alone are usually the economical first step. Add BLE when assets dwell in uninstrumented areas and idle or lost assets cost enough to justify beacons and their higher per-tag price. A supplier can model both scenarios against your loss data.