QDAT JOURNAL
Field notes on operational data systems: traceability architecture, RFID, cold-chain visibility, and applied engineering.

RFID
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 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 extend RFID from identification to condition awareness. CoolTag 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
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
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