A wireless device called a hotspot, or helium miner, uses radio technologies for HNT minting
Mining helps verify the legitimacy of transactions conducted via a blockchain network such as the Bitcoin blockchain. Miners can start mining cryptocurrencies using hardware like a central processing unit (CPU) or application-specific integrated circuits (ASICs). Alternatively, they can use smartphones powered by Android and iOS systems to mine the cryptocurrencies of their choice. But, how about mining cryptocurrencies via a decentralized wireless network? Strange it may sound, but miners can now mine cryptocurrencies without relying on expensive infrastructure. Helium Network has made it possible by allowing nodes to act as hotspot devices.
Source
https://t.me/Helium_Waves_Stepn
