Colorado’s Legal Pot Growers Grumble About RFID Tagging (BusinessWeek)

A canary-yellow tag placed on each plant emits a radio frequency identification signal (RFID) that allows officials consulting a statewide database to track crops from bud to blunt. Tags with 24-digit IDs are staked into the soil or wrapped around individual plants while they grow in the dirt or hydroponically. The tags travel with the plants through a growhouse to harvest and as the pot flowers are dried and cured for flavor. For shipment to stores, each strain gets grouped into a batch that receives matching RFID tags, which remain on the packages until sale. During scheduled and unscheduled visits to dispensaries or growhouses, state officials use RFID scanners and electronic inventories to ensure that none of the plants go missing.

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