There are several cryptocurrency wallets that support YubiKey as a second-factor authentication method for securing user accounts. it can be used as a security key to enhance the security of your existing crypto wallet with Yubikey Crypto Wallet Support. Some examples include:

Ledger Nano X: This hardware wallet supports YubiKey for two-factor authentication, and it's compatible with over 1,500 cryptocurrencies.

Trezor Model T: Another hardware wallet that supports YubiKey, and it's also compatible with over 1,000 cryptocurrencies.

Bitwarden: This is a password manager that also supports YubiKey as a second-factor authentication method. It's available as a web app, browser extension, and mobile app.

Electrum: This is a desktop wallet that supports YubiKey as a second-factor authentication method for securing user accounts.

KeepKey: This hardware wallet supports YubiKey as a second-factor authentication method, and it's compatible with over 40 cryptocurrencies.

It's worth noting that not all YubiKey devices are compatible with all crypto wallets, so it's important to check the specific model and version of YubiKey that a wallet supports before making a purchase.