Unmatched crypto security The Trezor Model One Cold Storage Wallets are designed to keep your coins safe and increase your confidence in managing cryptocurrencies. Securely store and protect your keys, passwords, financial information and other sensitive data in the world's first cryptoHardware-Wallet. Hands-on verification Buy, sell and trade coins with complete confidence. Trezor 's unique physical security flow ensures that operations are both intentional and legitimate. Each and every transaction is independently verified and physically confirmed directly on your Trezor Model One Hardware Wallet . Enter PIN and passphrase Trezor Hardware-Wallets are protected from unauthorized access by a user-defined PIN of up to 50 digits. For the ultimate in access security, you can add a passphrase to your Trezor . A passphrase is a user-created series of letters, words, phrases, and spaces that is required for any physical access to your Trezor Hardware Wallet .