Authentication & Passwordless

YubiKey is a hardware security key that uses cryptographic authentication instead of passwords. The blog highlights how traditional methods like passwords, SMS, and authenticator apps fail against modern threats like phishing and credential theft. The guide breaks down how a YubiKey works, including its secure chip, authentication flow, and supported protocols like FIDO2 and OTP. It compares YubiKey with other authentication methods to show why it offers stronger, phishing-resistant security. It also covers real-world use cases, enterprise deployment, and its limitations in frontline and shared device environments.