Do you find it effective?
Generally speaking, I would say yes, it is—but that's an oversimplification. It's sort of like asking if a chainsaw is a good tool for cutting. It really depends on what you want to cut and how you want to cut it. A chainsaw is great for cutting up the limbs of a fallen tree, but it would not be very effective at cutting detailed crown molding.
There are many different types of radio frequency identification. Like saws, each is appropriate for a certain set of applications and inappropriate for other uses. If you wanted to track individuals, shipments or vehicles over long distances, RFID would not be a good tool. GPS would be much better for that purpose. If, however, you wanted to track parts bins on a production line, an active RFID tag might be an ideal tracking tool, while a Near Field Communication (NFC) tag would not work.
We produced a report titled "How to Choose the Right RFID System: A Step-by-Step Guide," which can walk you through the process of matching the right type of RFID to your specific application. I recommend checking out that report.
—Mark Roberti, Founder and Editor, RFID Journal
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