Apple now lets you replace 6-digit verification codes with physical FIDO security keys for your Apple Account. We tested the top options — here's what works with iPhones, Macs, and why you need two keys.
In early 2023, Apple introduced Security Keys for Apple Account — a way to replace the standard 6-digit verification codes with a physical hardware key.1 Instead of typing a code sent to your phone, you tap or plug in a small device that cryptographically proves it's really you. This stops phishing dead: even if someone tricks you into handing over your password and code, they can't sign in without your physical key.
The feature works with any FIDO Certified security key.1 Apple explicitly lists the YubiKey 5C NFC and FEITIAN ePass K9 NFC as compatible examples. You'll need at least two keys — Apple requires a backup in case you lose one.
Not every security key works with Apple's implementation. Here's what matters:
The YubiKey 5C NFC is the gold standard. It supports USB-C (works with modern MacBooks, iPad Pros, and iPhone 15 series) and NFC (tap-to-authenticate on any iPhone with iOS 16.3+). It's the key Apple themselves recommend as an example.1
It also supports a wide range of protocols beyond FIDO2 — including OTP, PIV, and OpenPGP — making it useful for developers and IT admins who need one key for everything.
The catch: it's pricier than simpler keys, and if you only need Apple ID security, you might be paying for features you won't use.
The Yubico Security Key C NFC is essentially the 5C NFC stripped down to just FIDO2/WebAuthn and U2F. No OTP, no PIV, no OpenPGP. That makes it cheaper while delivering the exact same phishing protection for your Apple Account.
It has the same USB-C connector and NFC capabilities. If you only care about securing your Apple ID (and maybe other FIDO2-compatible services like Google or GitHub), this is the smarter buy.
The FEITIAN ePass K9 NFC is a FIDO2-compliant key that Apple lists alongside the YubiKey as a compatible option.1 It offers USB-C + NFC at a competitive price point. Build quality is solid, and it works reliably across iOS, macOS, and Windows.
It's a good pick if you want a backup key that's different from your primary YubiKey — or if you're looking to save a bit more than the Yubico Security Key.
| Feature | YubiKey 5C NFC | Yubico Security Key C NFC | FEITIAN ePass K9 NFC |
|---|---|---|---|
| Connector | USB-C + NFC | USB-C + NFC | USB-C + NFC |
| FIDO2 | ✅ | ✅ | ✅ |
| Extra protocols | OTP, PIV, OpenPGP | None | None |
| Price tier | Premium | Budget | Budget |
Apple doesn't let you register just one security key. The system requires at least two so you have a backup if one is lost, damaged, or forgotten.1 This is a smart policy — a single point of failure defeats the purpose of hardware security.
A common strategy: buy one premium key (like the YubiKey 5C NFC) as your daily carry, and a cheaper key (like the FEITIAN or Yubico Security Key) as your backup stored in a safe place.
If you want the most versatile key that works everywhere, get the YubiKey 5C NFC. If you just want Apple ID protection at the lowest price, get the Yubico Security Key C NFC. Either way, buy two.
Disclosure: AskBuy earns a small commission if you purchase through the links above. This doesn't affect our recommendations — we only recommend what we'd use ourselves.
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