An active tag’s range can be expanded with repeaters, which receive a signal, amplify it and forward it on to a reader antenna. There are a variety of tags on the market that can be combined with GPS transmitters to allow the tag to be pinpointed when it is outside an interrogator’s read range. There are also tags that can communicate with cell towers to transmit sensor data. If you are monitoring the temperature of produce on a truck, for example, the active tag’s sensors can be transmitted via the cell network.
Here are some articles that might be of interest:
I hope these articles are helpful.
—Mark Roberti, Founder and Editor, RFID Journal
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