Seguro 150 Bluetooth and NFC temperature logger works without mobile app (for the receiver)

Sensified.io Seguro 150 is a 4mm thick waterproof temperature logger designed for cold chain shipping applications in the food and healthcare industries and can also be used in retail settings.

Most IoT devices require you to install some type of proprietary app, but the Seguro 150 is said not to require any app for the receiver and the temperature logger instead relies on Bluetooth LE and NFC so he/she can tap his/her phone to access the data and it’s also possible to receive PDF or Excel reports by email.

Bluetooth NFC Temperature Logger

Seguro 150 specifications:

  • Wireless
    • Bluetooth LE 5.0 up to 2Mbps
    • Near-field communications (NFC) up to 10mm range
    • Protocol – Type 4 Tag Emulation
  • Temperature measurement
    • Temperature Range – -30°C to +40°C
    • Thresholds – High, Low
    • Measurement Response – Sampling Interval, Start Delay
    • Buffer – 7 days with 2-minute sampling to 7 months with 60-minute sampling
  • Misc – Multi-color LED
  • Battery – Single 3.0V LiMnO2 cell good for over 2 years in “normal conditions”
  • Dimensions – 62 x 43 x 4mm
  • Weight – 20 grams
  • Material – ABS (FDA 21CFR approved)
  • Ingress Protection – IP65
  • Transport Class – UN 3091-PI970 Section II (for the shipment of devices with batteries)

Temperature logger NFC mobile phone

Both the sender and receiver can access the data. The sender starts the recording by pressing the button and can add thresholds and associated data (tracking number, etc.) using the Seguro app, while the receiver taps the Seguro tag with any NFC-enabled phone (no app required) to see the temperature record at which point it is automatically sent to the receiver. The Seguro 150 is said to integrate with carriers such as FedEx, UPS, and USPS and the sender can also access the data from the cloud/app.

Sensified.io is currently selling the Seguro 150 Bluetooth & NFC temperature logger for $29.00 (introductory offer). More details can be found on the product page where you can purchase the device and the press release.

Thanks to TLS for the tip.

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3 Comments
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Fazal Majid
1 year ago

Clever. For the receiver, the tag just generates a URL with the data in URL query-string parameters so all you need is a browser and a NFC-enabled phone.

Rogan Dawes
Rogan Dawes
1 year ago

And the very act of visiting the URL to view the data also uploads the data to the app, allowing other parties to view the data as well. I’d hope that the data is checksummed/signed to prevent tampering, of course.

zloster
zloster
1 year ago

I’ve seen the same data store and exchange flow in this project:
https://www.cnx-software.com/2021/09/17/cupltag-battery-powered-nfc-tag-logs-temperature-and-humidity/
They do the same: store data in a circular buffer and encode it as an URL parameter.
Also they allow configuration of each device via NFC:
https://github.com/cuplsensor/cupltag/blob/master/docs/guides/configNFC/index.md

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