HID Global RTLS: independent review.
HID sells two unrelated locating technologies under one brand, acquired eight years apart. Knowing which one is in front of you is the first thing a buyer needs to establish, and the product names do not always make it obvious.
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Who they are
HID Global is a brand of the ASSA ABLOY Group. Its locating portfolio is not one platform but two lineages, bought separately:
- Bluvision, acquired December 2016, now sold as HID Bluzone and HID BLE Beacons & Gateways. Bluetooth.
- Sewio Networks, acquired 6 August 2024. Founded 2014 in Brno, Czech Republic. Ultra-wideband, and now sold as HID Sewio UWB-Based RTLS.
HID kept the Sewio name rather than absorbing it, which is helpful. The established components are RTLS Studio for software, Leonardo tags and Vista anchors. In September 2026 HID announced HID Sewio Zevon, a new UWB platform. HID’s Zevon page says it is not compatible with Vista anchors or Leonardo tags, so confirm which generation a quote is for.
Practical consequence: "HID RTLS" is ambiguous in a requirements document. Name the product. A Bluetooth beacon estate and a UWB positioning system are different projects with different costs, and both are sold under the same logo.
Comparing this supplier with others? See independent supplier selection.
Accuracy: what they market, and what their own documentation says
This is the most useful thing we can tell you about HID Sewio, and it is to their credit rather than against them.
The accuracy depends on your site, and we confirm it in the survey.
That second version is what a competent engineer would write, and it is more useful than the headline. If you are evaluating HID Sewio, ask for the documented figures rather than the brochure figure. They are better evidence, and the fact that the supplier publishes them at all is a mild point in their favour.
Scale and infrastructure
Sewio's documentation states there is no architectural limit on the number of devices, with the practical constraint being server CPU and memory, which should not run above about 95 per cent sustained. Treat that as an architectural statement rather than a tested ceiling, and ask for a reference at your device count.
Documented deployment constraints worth designing around:
- Cat5 Ethernet to anchors
- A minimum of four anchors for precise positioning: three is mathematically sufficient, the fourth corrects
- Anchors and server historically on the same subnet, relaxed by TCP sync from RTLS Studio v1.6 onwards
- Wi-Fi backhaul limited to five anchors per access point at better than −67 dBm
None of these are unusual for wired UWB. They do mean the cabling design is a real line item rather than an afterthought.
Where they fit
HID Sewio is a credible choice for manufacturing and logistics positioning where line of sight is reasonable and the cabling can be run. HID states that Sewio serves over 300 customers in 45 countries and names Volkswagen, Toyota, Continental and Budweiser Budvar among them. Those are supplier-stated and unaudited, as such figures always are.
The Bluetooth side is a different proposition: beacons and gateways for presence and zone-level awareness, not positioning. Sensible for condition monitoring and coarse asset location, not for anything needing a position on a floor plan.
What we would check before signing
- Which product, precisely: Sewio UWB or Bluzone BLE. Get it in writing.
- The accuracy figure with its confidence interval, at your ceiling height and racking material
- Whether HID intends to converge the Bluetooth and UWB platforms, and the support roadmap for Vista/Leonardo now that Zevon exists. It is a fair question to ask.
- The API specification. Integration is described as available via API. We could not locate a public specification.
- Licensing model, which is not published
The accurate summary
A solid UWB platform with unusually candid engineering documentation, sold under a brand that also covers an unrelated Bluetooth product line. The main risk is not technical. It is buying the wrong one of the two because the sales conversation stayed at brand level.
Compare: Sewio, Ubisense, Quuppa. Or start with the technology decision.
We hold no partner tier, reseller agreement or referral arrangement with HID or any supplier on this site.
Sources
Supplier and standards facts on this page come from the public sources below, checked on 25 September 2026. Supplier statements are reported as the supplier’s own claims.
- HID newsroom: HID acquires Sewio Networks (6 Aug 2024)
- Business Wire: HID Global acquires Bluvision (1 Dec 2016; Bluzone cloud services)
- UWB is usually the most precise of these options. The accuracy you get depends on your site, and we confirm it in the survey.
- Sewio Documentation: FAQ System (R98/R70/R90 accuracy, four-anchor minimum, Cat5, subnets from RTLS Studio v1.6, no device limit, 95% CPU/RAM)
- Sewio Documentation: Network Wi-Fi (up to 5 anchors per AP, better than −67 dBm, TCP sync)
- HID: Sewio Zevon launch press release (Sep 2026)
- HID: Sewio Zevon product page and FAQ (compatibility with Vista/Leonardo)
- RFID Journal: HID’s latest acquisition aims to expand UWB RTLS (21 Aug 2024)
Last updated: 5 October 2026