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Temperature Indicator Labels

Data loggers have been the foundation of cold chain logistics for years. However, data loggers replace one problem with another: they’ll provide lots of data, but it’s up to the shipper to make sense of it.  And they are expensive.

Varcode has responded with the Smart TagTM.  These innovative temperature indicator labels & barcodes provide dynamic temperature updates to your cold chain logistics professionals at any point during the journey, at a fraction of the cost of electronic data loggers.

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Digitized Time Temperature Indicators

Varcode’s patented Smart Tag™ utilizes technology that causes the barcode to shift dynamically as the temperature changes within the shipping container.  The labels provide cumulative temperature-time exposure at a variety of time intervals and can tell when the shipment dropped below an acceptable temperature range for a predetermined period of time.  The result is a barcode that can tell a story every time it’s scanned.


  • The SmartTagTM can be applied to the product in-line or post-production.
  • Format the SmartTagTM in any industry barcode standard, including UPC, EAN, Code 128, and more.
  • Shipping pharmaceuticals or food? Varcode designed the SmartTagTM to aid with FDA compliance.

Custom Configurations

Varcode is dedicated to customizing your temperature monitoring system to your business needs. Our Smart Tag™ comes in a variety of standard time and temperature configurations based on industry needs ranging from -4°F (-20°C) to 104°F (40°C) with time parameters from 15 minutes to 24 hours or more.

A Smart Tag™ can be formatted as any universal identifier code to fit the barcode symbologies used in your business. Examples include Code 128, UPC-a, ​​GS1 DataBar, Code 39, UPC-E, or EAN codes to integrate existing tracing data used today seamlessly.

Customize the top layer of a Smart Tag™ with your branding as part of the full VSDS integration. 

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Why Choose VSDS?

Unlike data loggers, the Varcode Smart Data Solution (VSDS) was designed with simplicity and actionable intelligence in mind, with no need for complicated data crunching.  Every scan of the Smart Tag™ sends data to our cloud-based storage system, where your cold chain logistics team can access data from an online dashboard at any point in the journey.  And immediate email or text alerts can be sent to designated contacts.

The VSDS is flexible and scalable for organizations of any size. Varcode can develop a solution for large enterprises with existing infrastructure, or deliver a stand-alone system for smaller cold chain logistics companies.

Varcode’s solution can empower cold chain logistics professionals with actionable information to make informed, timely decisions.

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