Hardware wallets are the best way to secure your cryptoassets, if you have a substantial amount of fund. Your private key is safely stored completely offline on a little USB device and it never leaves it. Hardware wallets have their own little screen and buttons. In order to make transactions you will need to connect your device to a computer, the device will ask you to confirm by pressing buttons on it. Even if the computer that is connected to your device has a malicious virus, you can be sure that your fund is safe. If you lose your hardware wallet you can restore it on another wallet using your recovery phrase/seed. Hardware wallets are not free, their prices vary. It’s worth to have one if you are intending to invest significant amount of money in cryptocurrency. You can check the prices of hardware wallets by visiting their official websites. The most popular hardware wallets are: Trezor, Ledger Nano, DigitalBox.