What read range of UHF tags do you need?

“Everybody wants a small tag with long range – it’s probably the single most wished-for tag people ask me about. They only have room for a 1” by 1” tag, but they want to read it from 40 feet away. And that’s something that physics just cannot deliver in an inexpensive, passive UHF tag. Generally speaking,” smile LV from OPP IOT explains, “with passive tags, the longer the read range, the bigger the antenna.

“Do you want to read items from a distance, like for identifying inventory in a warehouse, or is this a security or authentication application, where you’d want the tag to come into much closer contact with a reader before registering? Be ready to answer those types of questions, because read range definitely influences tag selection.”

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