Tracking Stolen Bikes with Narrowband IoT

For his entry into the 2019 Hackaday Prize, [Marin Vukosav] is working on an ambitious project to create a small GPS tracking device which utilizes Narrowband IoT (NB-IoT) for long range communications. Rather than using a GSM modem which would suck the batteries dry in short order, NB-IoT can theoretically maintain a connection within a 10 to 15 kilometer range while keeping the energy consumption low enough that the tracker could go up to a year before needing to be recharged.
At this point, the hardware is still in the proof of concept phase. [Marin] is using an Arduino with a

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