Phishing-Resistant Sign-In

A hardware challenge cannot be replayed on a lookalike login page.

Wide Service Support

A key only helps on accounts that actually accept one, so coverage sets value.

Matching Port or NFC

A laptop, a desktop, and a phone rarely share the same connector.

Fingerprint on the Key

Biometrics on the device itself stop a stolen key from being enough.

Build for Daily Keyring

Something carried with car keys gets scratched, bent, and dunked eventually.