According to Decrypt, hardware wallets keep crypto keys offline. These devices—such as those produced by Ledger, Trezor and similar manufacturers—are designed to store private keys away from internet-connected systems. The purpose is to reduce exposure to online threats.
The tools support storage for cryptocurrencies including Bitcoin and Ethereum. Users interact with the device through a built-in screen and buttons to confirm transactions locally, without transmitting private keys over networks.
Because the keys remain offline during use, hardware wallets are commonly referred to as “cold storage” solutions. This approach aims to enhance security compared to software wallets that operate on internet-enabled devices like phones or computers.
