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Could an RFID Tag Be Read Through a Locomotive's Metal Structure?
I have a query regarding RFID functionality: Imagine that an omnidirectional 2.4 GHz active RFID reader is stationed within a locomotive cab, which is mostly metal-shielded, with little area of glass window, and an active RFID tag is attached to a wayside railway traffic signal post. My question is this: Would that reader be able to interrogate RF signals without hindrance?
It's unlikely that you would be able to read the tag through the metal. I would suggest placing the reader on the outside of the train.
—Mark Roberti, Founder and Editor, RFID Journal
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