QDAT JOURNAL
Our Blog
Field notes on operational data systems: traceability architecture, RFID, cold-chain visibility, and applied engineering.
QDatDroid
One scan, every identity: QDatDroid 2.4.6 makes a Thing show all its faces at once
Multimodal tagging has landed. With QDatDroid 2.4.6 on a Zebra TC22R or Dragonwing TC501, a single pull of the trigger takes the product's picture, reads its barcode or QR Code, and picks up its RFID — together, in one moment. One identity with many personalities, streamed live to QDat.io 2.2.20 over MQTT.
QDat.io Team • Thu Jun 25 2026 • 6 min read
Sustainable Identity
Sustainable Identity, in many forms: the visual twin, the ink, and a multimodal plane
A RAIN tag answers the scanner — but the Thing still wears a printed, globally resolvable GS1 Digital Link, and that printing has to be sustainable too. Why Meerv evolved from Sustainable Radiofrequency Identity to Sustainable Identity of many forms, and how EcoCir ink prints both the radio and the visual code from one sustainable material.
QDat.io Team • Sat Jun 20 2026 • 7 min read
Spatiotemporal DPP
IoT becomes the Internet of Tapped Digital Product Passports
TapDPP is now a public release on the Google Play Store — and soon on Apple's App Store. When the reader is the phone already in everyone's pocket, the Internet of Things quietly becomes the Internet of Tapped Digital Product Passports: every tap a (When, What, Where) event resolved by QDat.io.
QDat.io Team • Sun Jun 14 2026 • 6 min read
Engineering
Making QDatDroid feel native on Dragonwing: the work behind Zebra RFID SDK 2.0.5.275
Qualcomm's Dragonwing Q-6690 puts a UHF RFID reader inside the chip, and Zebra's sledless TC501, TC701, and ET401 are reaching mass availability. Here's the six-day, six-build effort it took at Meerv Inc. to make every QDatDroid convenience work as well on the on-SoC Qualcomm radio as on a Bluetooth sled.
QDat.io Team • Sun Jun 14 2026 • 9 min read
QSeq
QSeq.app is live: print-true GS1 identities, and what they mean for the printing industry
QSeq from Meerv Inc. is now in the browser at qseq.app, with native macOS and Windows builds beside it. It mints SGTIN, EPC Tag URI and GS1 Digital Link identities and prints them at the exact physical size — the front end for printers and converters collaborating with Meerv Inc.
Meerv Inc. • Sat Jun 13 2026 • 8 min read
Platform
Web-grade dashboard, 100% through the API: meet the QDat.io Desktop Dashboard
The QDat.io Desktop Dashboard brings near-parity with the web dashboard to Windows, macOS, and Linux — and every screen it draws is powered by the public QDat.io API. If you can see it in the app, you can build it into your WMS or ERP.
QDat.io Team • Mon Jun 08 2026 • 6 min read
QDatDroid
Deploy with NuroVaults and Axzon AZN5201 tags on a Zebra Android reader — QDatDroid 2.1.4 is production-ready
QDatDroid 2.1.4 is now fully tested and released for production. If you have a portable Zebra RFID reader running Android and a NuroVault or Axzon AZN5201 sensor tag, this is the shortest path to reading temperature off a passive RAIN tag — GPS-and-time stamped, streamed live to QDat.io, in minutes.
QDat.io Team • Mon Jun 08 2026 • 7 min read
Spatiotemporal DPP
TapDPP is now in public beta on Android and iPhone — here's what you can do with any NFC tag
Both TapDPP clients are downloadable from QDat.io/tapdpp and wired to the tapdpp.qdat.io playground. Grab a blank NFC tag and you can write, tap, and re-route a spatiotemporal Digital Product Passport in minutes — no fixed readers, no backend.
QDat.io Team • Fri Jun 05 2026 • 7 min read
Cold Chain
Blood Cold Chain: Item-Level Traceability When Every Bag Comes From a Different Source
A mass transfusion protocol pulls blood from coolers, satellite fridges, the main bank, and emergency release — dozens of units, multiple origins, minutes apart. Compliance certification has to answer four questions per bag: which unit, when it was out of range, for how long, and where. When the answer lives on the bag and not in the cloud, the compromised unit gets interdicted before it is ever spiked.
QDat.io Team • Mon Jun 01 2026 • 9 min read
Industrial DPP
Industrial DPPs Without an Internet Resolver: QDat.io On-Premise, Privacy by Design
Industrial DPPs cannot depend on a public-Internet resolver — the network may be gone, the brand may have moved on, the asset may have decades left. NFC NDPP puts the data on the chip; QDat.io plays the on-premise resolver the chip's URL points to, running locally on edge boxes, vessels, or air-gapped facilities. Operational metadata never leaves the operator's perimeter — privacy is preserved by where the resolver runs, not by policy.
QDat.io Team • Mon May 25 2026 • 10 min read
RFID
Spatiotemporal IoT with RAIN+NFC Tags
Multimodal labels that pair RAIN RFID with NFC and an optional QR code or barcode are the most powerful identity substrate Physical AI has ever had. They store a GS1 Digital Link URL on-chip and resolve to a Digital Product Passport.
QDat.io Team • Sun May 17 2026 • 9 min read
Physical AI
The Spatiotemporal Intelligence Automation Plane
The SIAP is the layer that belongs inside every Physical AI stack — the plane that connects every physical Thing to the agents, robots, machines, and humans that act on it.
QDat.io Team • March 30, 2026 • 7 min read
RFID
RAIN RFID Sensors — and how NuroVault implements one
RAIN RFID sensors extend RFID from identification to condition awareness. NuroVault is QDat.io's implementation: an autonomous peel-and-stick label built on the Axzon AZN5201 IC.
QDat.io Team • Tue Feb 24 2026 • 8 min read
Cold Chain
Cold Chain as the Foundation for Predictive Shelf Life
Predictive shelf-life models only perform as well as the cold-chain data behind them. Consistent time-temperature visibility is the foundation for reliable freshness forecasting.
QDat.io Team • Tue Feb 10 2026 • 6 min read
Industry Insights
2026 — The Year Where RFID Gets Democratized
RFID is no longer confined to large enterprises. Lower hardware costs, better tooling, and cloud-native workflows are making item-level traceability accessible to teams of every size.
QDat.io Team • Thu Jan 15 2026 • 8 min read