Trezor is a hardware wallet providing advanced security for handling Bitcoin and other cryptocurrencies private keys.
Unlike traditional cold storage methods (offline storage or paper wallets), Trezor makes secure payments without exposing your private keys to a potentially compromised computer.
Trezor is a small single-purpose computer. It is designed to protect your private keys from possible online and offline risks. To do this, Trezor keeps the private keys away from the Internet and confirms the transactions in-device. That way, you can always check the screen for the right address, amount and transaction fee before sending your bitcoins.