Most businesses still run on passwords. And it’s kind of wild when you think about it.
We lock the front door with deadbolts, cameras, alarms. But then we protect payroll, customer data, bank accounts, admin dashboards, and email inboxes with… a string of characters that humans are expected to invent, remember, and never reuse.
That system is breaking. Not slowly either.
Passkeys are the fix that’s finally simple enough to actually stick.
This article explains what passkeys are (yes, the Face ID and fingerprint thing), why they’re safer than passwords, and how they block the huge majority of real world account takeover attempts. The kind that actually hit businesses. Every day.
What a passkey is, in normal language
A passkey is a modern login method that replaces passwords with biometric unlock (Face ID, Touch ID, fingerprint) or a device PIN.
So instead of typing:
- Password
- Maybe an SMS code
You just do:
- Confirm your account
- Look at the camera or touch the sensor
- You’re in
Under the hood, passkeys use a security standard called FIDO2 / WebAuthn. You don’t have to memorize that. Just know this:
A passkey is not your face or fingerprint being sent to the website.
Your face or fingerprint just unlocks a cryptographic key that stays on your device.
That’s the whole point.
The big difference: passwords are shared secrets, passkeys are not
Passwords are a “shared secret”.
You know it. The website knows it (or stores a version of it). Hackers try to steal it, guess it, or trick you into typing it.
Passkeys work differently. They use public key cryptography, which sounds scary but it’s actually straightforward:
- Your device creates two keys: a public key and a private key
- The public key is stored by the website (safe to share)
- The private key never leaves your device. Ever.
When you log in, the website sends a challenge and your device signs it using the private key. The website verifies it with the public key.
So there’s nothing reusable to steal.
No password to leak. No code to type into a fake login page. No “what was the 3rd character of your childhood pet’s name” nonsense.
“Passkeys (Face ID/Fingerprint)” explained, clearly
When people say “passkeys are Face ID or fingerprint logins”, they’re talking about the user experience, not the security mechanism.
Here’s what’s actually happening:
- You go to log in on a site that supports passkeys.
- Your phone or laptop prompts you: Face ID / Touch ID / fingerprint / device PIN.
- You approve.
- The device uses the private key stored in its secure hardware (Secure Enclave, TPM, etc.) to prove it’s you.
Important detail: your biometric data stays on your device. It does not get uploaded to the business app. The app never “receives” your fingerprint.
The biometric is just a local unlock method, like a key fob. The cryptographic proof is what authenticates you.
Why passkeys are safer than passwords (the practical reasons)
You don’t need a 40 page security doc to understand this. Just look at how accounts actually get hacked.
1. Phishing basically stops working
Phishing is still the #1 way real breaches start.
A fake login page. A “Microsoft 365 password expired” email. A Slack message pretending to be IT.
Passwords are easy to phish because the attacker just needs you to type the secret into their fake site.
Passkeys are tied to the real website. Your device won’t sign a login challenge for micros0ft-login.com if your passkey is for microsoft.com.
So even if someone clicks the wrong link, there’s nothing to type in. Nothing to hand over.
This is the single biggest win.
2. Credential stuffing dies off
Credential stuffing is when attackers take usernames and passwords leaked from other sites and try them everywhere.
And it works because humans reuse passwords. Even smart ones do it. Especially under pressure.
Passkeys can’t be reused like that.
There’s no “password” to replay on another site. Each passkey is unique per service.
3. Data breaches hurt less
When a website gets breached today, attackers often steal password hashes. Then they crack them offline. Or sell them. Or use them for stuffing.
With passkeys, the server stores a public key. If that gets stolen, it’s useless for logging in. It’s meant to be public.
So breaches still matter (customer data is customer data), but that classic “now all users are exposed because passwords leaked” scenario becomes much less of a thing.
4. You remove whole categories of human error
- No weak passwords
- No reused passwords
- No “I forgot my password” tickets
- No sticky notes
- No shared team passwords in a Google Doc (yes it happens)
- No onboarding spreadsheet titled “LOGINS FINAL FINAL”
Passkeys reduce the amount of stuff your team can accidentally do wrong.
That’s not an insult to employees. It’s just reality. Everyone is busy.
How passkeys stop “90% of hacking attempts” (what that really means)
The “90%” number is basically shorthand for this idea:
Most account compromises come from a few common attack paths, and passkeys block the main ones.
If you look at the most common ways attackers take over accounts, it’s usually:
- Phishing (steal the password)
- Credential stuffing (reuse leaked passwords)
- Social engineering (trick someone into sharing a code or password)
- Brute force (guess the password)
- MFA fatigue (spam push prompts until someone accepts)
Passkeys directly neutralize several of these.
- Phishing: blocked because there’s no shared secret to type, and passkeys are bound to the site.
- Credential stuffing: blocked because there’s no password to reuse.
- Brute force: blocked because there’s nothing to guess.
- MFA fatigue: reduced because many passkey flows include user presence and biometric confirmation. You’re not just tapping “Approve” half asleep.
So when people say “passkeys stop 90% of hacking attempts”, they’re usually pointing to this reality: the majority of account takeover attempts target passwords, and passkeys remove passwords from the equation.
Are passkeys magic? No.
If a device is fully compromised, or someone is tricked into approving access in some other way, bad things can still happen. But you’ve eliminated the most common, scalable attack methods. The ones that hit everyone.
And that’s a massive shift.
What this looks like for a business (not just consumers)
Passkeys aren’t only for personal Gmail accounts. Businesses can use them for:
- Google Workspace / Microsoft accounts (where supported)
- Password managers and SSO providers
- Internal tools and admin panels (via WebAuthn)
- Customer logins (ecommerce, SaaS apps, portals)
Two big areas where they shine:
Employee accounts (especially email)
If an attacker gets into a single employee email inbox, it can turn into:
- invoice fraud
- payroll redirect scams
- customer data leaks
- internal phishing to other employees
Passkeys make that first foothold harder to get.
Customer logins
Customers hate passwords. They abandon signups. They reset them constantly. And if they reuse a password from some old leak, your app becomes the place where the takeover happens.
Passkeys make login faster and safer at the same time, which is rare.
Common concerns (and the honest answers)
“What if someone loses their phone?”
Passkeys can sync across devices using platform keychains (like iCloud Keychain or Google Password Manager), and businesses can also implement recovery flows.
For employees, you should still have device management policies and backup methods. But losing a phone is already a risk today. The difference is passkeys reduce the chance your credential was already stolen months ago.
“Can we still use passwords as backup?”
You can, but it’s not ideal.
If you keep passwords as an easy fallback, attackers will target the fallback. That’s what they do. They look for the weakest door.
A better approach is phased migration:
- start with passkeys
- keep strong recovery
- gradually reduce password use for high risk accounts (admins, finance, IT)
“Is Face ID safe?”
Yes, for this use case. And again, Face ID is not what the website is trusting.
The website is trusting cryptographic proof from a private key stored in secure hardware. Face ID just unlocks it locally.
The simple takeaway
Passwords are easy to steal, easy to reuse, and easy to mess up.
Passkeys flip the model.
They’re harder to phish, useless to steal in bulk, and way easier for normal people to use. Face ID and fingerprint login feels like a convenience feature, but it’s actually a security upgrade with real teeth.
If your business wants fewer breaches, fewer support tickets, and fewer “how did this even happen” moments, switching to passkeys is one of the cleanest wins available right now.
FAQs (Frequently Asked Questions)
What exactly is a passkey and how does it differ from traditional passwords?
A passkey is a modern login method that replaces passwords with biometric unlock methods like Face ID, Touch ID, or a device PIN. Unlike passwords, which are shared secrets stored by websites, passkeys use public key cryptography where your device creates a public and private key pair. The public key is stored by the website, while the private key never leaves your device. This means there’s no reusable secret to steal or type in, making passkeys much more secure.
How do passkeys use biometrics without compromising my personal data?
When you log in with a passkey using Face ID or fingerprint, your biometric data never leaves your device. The biometric unlock simply grants access to the private cryptographic key stored securely on your device’s hardware (like Secure Enclave or TPM). This key then proves your identity to the website via cryptographic proof. So, your fingerprint or face scan stays private and is never uploaded or shared with the service you’re logging into.
Why are passkeys considered safer than passwords against phishing attacks?
Phishing attacks rely on tricking users into entering their password on fake websites. Passkeys are tied cryptographically to the legitimate website domain. Your device will only sign login challenges for the genuine site and refuse any request coming from a fraudulent URL. This means even if you click a malicious link, there’s no password to enter or hand over, effectively stopping phishing attempts in their tracks.
Can passkeys prevent account breaches caused by credential stuffing?
Yes. Credential stuffing happens when attackers reuse leaked usernames and passwords from other sites to gain unauthorized access. Passkeys generate unique cryptographic keys per service and do not rely on reusable secrets like passwords. Therefore, stolen credentials from one site cannot be used to access accounts on another, eliminating the risk posed by credential stuffing.
How do passkeys reduce human errors related to password management in businesses?
Passkeys eliminate common human mistakes such as creating weak passwords, reusing them across sites, forgetting passwords, writing them down on sticky notes, sharing team passwords insecurely, or maintaining risky onboarding spreadsheets with login details. By removing the need to remember or manage passwords altogether, passkeys simplify security and reduce costly errors caused by busy employees.
What types of hacking attempts do passkeys block and how effective are they?
Passkeys block several common attack vectors including phishing (stealing passwords), credential stuffing (reusing leaked credentials), social engineering (tricking users into sharing codes), brute force attacks (guessing passwords), and MFA fatigue (spamming push notifications until acceptance). Collectively, these protections help stop approximately 90% of real-world account takeover attempts that businesses face daily.

