Hardware Security Keys: Do You Need One and How to Choose
A hardware security key is a small device that proves your identity when you sign in. It is one of the strongest defences against phishing.
How it works
When you sign in, the key checks that the website is genuine and signs a challenge. A fake site cannot use it, which makes the key phishing-resistant.
Who should consider one
- Journalists, activists and executives.
- Anyone with valuable crypto or financial accounts.
- People whose email is critical to their work.
- Anyone who wants the strongest protection at low cost.
What to look for
- FIDO2 / WebAuthn support.
- Connection types that fit your devices: USB-A, USB-C, NFC.
- Biometric option if you want a fingerprint on the key.
- A reputable manufacturer.
Practical tips
Always register at least two keys and keep one in a safe place. Keep recovery methods enabled and know what happens if a key is lost.
Key takeaway: A security key is inexpensive protection for your most important accounts. Buy two and keep one as a backup.
