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TNT Uses RFID To Track Temperatures of Sensitive Goods
The new service assures that health-care, pharmaceutical and chemical companies' products remain at appropriate temperatures during transit.
Oct 13, 2006—TNT, a logistics and global express-services provider headquartered in the Netherlands, is introducing a new RFID service in Asia. This service tracks temperature levels associated with health-care, pharmaceutical and chemical goods as they move along the supply chain. It is designed to assure companies their products are stored and shipped at the correct temperature, becoming neither too hot nor too cold while in transit.
TNT invested $500,000 in its RFID cold-chain solution, which can capture temperature changes of goods in transit using temperature-monitoring RFID tags. The 2.4 GHz battery-assisted passive (BAP) tags can be programmed to turn on at any designated intervals, take temperature reads and then turn off again, says Steve Stine, director of life sciences for TNT Asia. When the goods arrive at their final destination, an RFID interrogator deactivates the tags and reads the recorded temperature data, automatically uploading it to software maintained by TNT. The service then generates a report detailing the temperature readings, the times at which they were taken and other statistics, making it available online both to TNT's team and to the customer.
Alien Technology's RFID BAP ALB-2484 tags, featuring built-in temperature sensors, and Symbol Technologies' RFID interrogators and RFID-enabled touch-screen computers. Individuals can use the latter to program, activate and deactivate the tags.
TNT began planning for the trial in January 2006. According to Stine, the trial ran from mid-June through late September.
During the trial, tags were programmed to take readings every half hour during the three-day road trip from Singapore to Thailand, and during the two-day air trip from Singapore to Shanghai. The tags and goods— chemical reagents—were placed next to each other in plastic sleeves, then packed into insulated boxes designed specifically for cold-chain shipments. These shipments contained frozen gel packs in a variety of quantities to help maintain the temperature of the products at between 2 and 8 degrees Celsius.
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