Here’s the hook straight from the project’s home page…
“Mining HNT is done by installing a simple device on your office window. That’s it. Seriously.”
Hotspots provide miles of wireless network coverage for millions of devices around you using Helium LongFi, and you are rewarded in HNT for doing this. And because of an innovative proof-of-work model (we call it “Proof-of-Coverage”), your Hotspot only uses 5W of energy
So, after a very long wait time I finally received two HNT Miners. Bobcat Miner 300 is a high-efficiency miner hotspot for HNT. It is compatible with Helium LongFi, an architecture that combines the leading wireless LoRaWAN protocol and the Helium Blockchain technology.

After many hours spent configuring the miner the results have been uninspiring. To be honest the mining rewards are very inconsistent for both miners.