Quick answer: a passkey replaces a password with a cryptographic key pair tied to a specific device and unlocked with a fingerprint, face scan, or PIN. Because there’s no shared secret being typed anywhere, a passkey can’t be phished the way a password can. Microsoft, Google, and Apple all support them now, and for most small and mid-sized businesses the harder question isn’t whether to adopt passkeys, it’s where to start.
What a passkey actually is
When a passkey is created, the device generates a matching pair of cryptographic keys: a private key that never leaves that device (or its synced ecosystem), and a public key that gets stored by the service you’re signing up with. Logging in becomes a cryptographic challenge and response between the two, not the typing of a shared secret that both sides need to keep safe, which is exactly the part of a password that’s been the weak point all along.
Why passkeys resist phishing in a way passwords never could
A password is just text, which means it can be typed into a convincing fake login page, and often is. A passkey is cryptographically bound to the real website’s domain, and simply won’t function on a lookalike domain, no matter how convincing the page looks to a human. This doesn’t make a passkey-protected account harder to phish, it makes the classic credential-phishing page stop working outright, which is a meaningfully different kind of protection than "harder to guess."
Where this makes sense for a business right now
- Microsoft 365 and Google Workspace logins, the accounts phishing targets most often
- Admin and privileged accounts first, where a compromise does the most damage
- Customer-facing applications, wherever the platform already supports it
- Employees who travel frequently or work from shared or public devices
What to sort out before rolling this out
A passkey rollout runs into trouble when it’s treated purely as an IT setting to flip on. It’s worth deciding in advance whether devices are company-owned or personal (which affects how passkeys sync and back up), planning a recovery process for a lost or replaced device, and thinking through shared or kiosk-style devices, which don’t fit the per-device model cleanly. Staff also need a short, plain explanation that this isn’t just a longer password, since the sign-in experience looks different enough to cause support tickets if nobody’s expecting it.
The bottom line
Passkeys aren’t a future technology at this point, they’re already supported by the platforms most businesses run on daily. Starting with admin accounts and Microsoft 365 or Google Workspace logins, then expanding from there, gets the highest-risk accounts protected first without trying to convert an entire company overnight. Our Identity & Access Security and Microsoft 365 Security teams can help plan a rollout that fits how your business actually works, and our Security Awareness Training can help staff understand what’s changing and why.