Findster Duo uses a proprietary protocol called MAZE, in the sub 1 GHz ISM band (868MHz EU; 915MHz USA), fully compliant with the FCC and CE directives.
While other GPS pet trackers require cell coverage in order to communicate with your smartphone, Findster Duo doesn't - its MAZE technology eliminates this need, making it 100% free of monthly fees. Since it doesn't depend on Telcos, Findster Duo also works everywhere in the world!
For more information on how this is possible, please check the article on how Findster Duo works.
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