Passwords are the weak point in most businesses.
People reuse them across accounts, write them on sticky notes, and type them into convincing fake login pages without realizing it.
Passkeys are the technology built to replace passwords, and they fix the parts that cause the most trouble.
A passkey lets you sign in with the same fingerprint, face scan, or PIN you already use to unlock your phone or laptop. There’s no password to type, so there’s nothing for an attacker to steal, guess, or trick out of you.
Let’s look at what passkeys are, why they’re so much harder to attack than passwords, and whether your business should start using them.
What Is a Passkey?
A passkey replaces your password with your device’s own security.
Instead of typing a password, you prove it’s you the same way you unlock your phone: a fingerprint, a face scan, or a PIN.
When you set up a passkey for a website, your device creates two matching keys.
The private key stays locked on your device and never leaves it. The public key is stored by the website.
When you sign in, the site sends a challenge that only your private key can answer. Your device answers it once you confirm with your fingerprint or PIN, and you’re in. The website never sees a password because there isn’t one.
This approach comes from a standard called FIDO, which Apple, Google, and Microsoft all build on.
Why Passkeys Are Harder to Attack Than Passwords
A password is a secret you share with the website every time you log in, and that’s exactly what attackers go after.
A passkey has no shared secret. That one difference fixes the biggest problems with passwords.
- They can’t be phished. A passkey only works on the real website it was created for. Land on a convincing fake, and the passkey simply won’t work, so there’s nothing to hand over. That matters because phishing is how most break-ins start.
- There’s no password to steal in a breach. The website only keeps your public key, which is useless on its own. If the company gets hacked, there’s no password list to grab and try on your other accounts.
- Nothing to reuse or forget. Each passkey is unique to one site and made automatically, so reused and weak passwords stop being a problem.
Older methods like text-message codes and app approval prompts can still be tricked out of people.
Where You Can Use Passkeys Already
Support has spread fast.
You can already sign in with passkeys to Microsoft, Google, and Apple accounts, plus a growing list of banks, password managers, and business tools.
Apple, Google, and Microsoft have built passkeys into their phones, laptops, and browsers, so the device in your pocket can already store and use them.
There are two types worth knowing:
- Synced passkeys are backed up to your Apple, Google, or Microsoft account, so they work across all your devices and help protect you if you lose one.
- Device-bound passkeys stay on a single device, such as a physical security key you plug in. This is the most locked-down option and a common choice for sensitive accounts.
Should Your Business Use Them?
For most businesses, yes, and you can start small.
There’s no need to switch everything overnight or eliminate passwords on day one.
If you use Microsoft 365, passkeys are already available through Microsoft Entra. Staff can sign in with a passkey stored in the Microsoft Authenticator app, a security key, or their own device. Google Workspace supports them as well.
They’re also faster. Microsoft reports that signing in with a synced passkey takes about three seconds, compared to roughly sixty-nine seconds for a password combined with a traditional MFA code. Across an entire team, those savings add up quickly.
Here are a few practical ways to get started:
- Turn passkeys on for your most sensitive accounts first, including administrators, finance staff, and anyone who can move money or make system changes.
- Allow everyone else to add a passkey as a faster, safer sign-in option alongside their existing login method.
- Make sure each user has a backup, such as a second device or a security key, so a lost phone doesn’t create access issues.
Your IT provider can help enable passkeys and guide the rollout to minimize disruptions.
What to Watch Out For
Passkeys aren’t magic, and a few things are worth planning for.
- Account recovery. If someone loses the only device storing their passkey and has no backup, they can be locked out. A synced passkey or a second registered device fixes this, but it needs to be set up in advance.
- Not everything supports them yet. Support is growing quickly, but some older systems and smaller vendors still rely on passwords, so many organizations will run both methods side by side for a while.
- Shared devices and logins. Passkeys are tied to a person and their device, so shared computers and shared accounts require a different approach.
Frequently Asked Questions
What Is a Passkey in Simple Terms?
It’s a way to log in using your fingerprint, face, or PIN instead of a password. Your device proves it’s you to the website, and no password is ever typed or stored.
Are Passkeys Safer Than Passwords?
Yes. They can’t be phished, there’s no password for a hacker to steal during a data breach, and there’s nothing to reuse or forget. Security agencies like CISA recommend FIDO-based logins, which is the technology passkeys are built on.
What Happens If I Lose the Device With My Passkey?
If it was a synced passkey, it’s backed up to your Apple, Google, or Microsoft account and remains available on your other devices. If it was device-bound and you don’t have a backup, you’ll need to use the account’s recovery process. That’s why setting up a second passkey or backup device is important.
Does Microsoft 365 Support Passkeys?
Yes. Passkeys are available through Microsoft Entra, including the free tier. Staff can use a passkey stored in the Microsoft Authenticator app, a security key, or their device.
Do Passkeys Replace Multi-Factor Authentication?
A passkey can satisfy multi-factor authentication requirements on its own. Unlocking it requires both your device (something you have) and your fingerprint, face, or PIN (something you are or know), allowing it to replace the traditional password-plus-code workflow.
Article used with permission from The Technology Press.