QR Codes for Cold Chain: Tracking Temperature-Sensitive Goods

1. Cold Chain Risk

Vaccines, biologics, fresh produce, and certain pharmaceuticals are damaged by temperature excursions. A broken cold chain can be invisible on arrival without monitoring.

2. QR as a Lookup Key

Print a QR on the shipment label that encodes a tracking ID. Scanning at any point in the chain calls an API that returns the temperature log, excursion history, and current disposition.

3. Sensor Integration

Pair the QR label with a printed or attached temperature logger. Some smart labels record temperature and encode the result as a visual indicator or a short-range NFC/BLE read. The QR links these data to the shipment record.

4. Regulatory Requirements

Many pharma and food regulations require documented temperature records. QR-linked digital logs satisfy this more reliably than paper records.

5. Label Durability

Cold-chain labels must adhere at temperatures down to -20°C or lower and survive condensation when removed from a freezer. Use cryogenic-rated label stock.