Passkeys vs Passwords: Should Your Business Make the Switch?
A password is a secret you type, which means it can be stolen. A passkey is a private key that never leaves your device, which means it cannot. Here is what changes when a business makes the switch, and how to roll it out without locking anyone out.
A passkey replaces your password with a pair of cryptographic keys: a private key that stays locked on your phone or laptop, and a public key held by the website. You sign in with the fingerprint, face, or PIN that unlocks your device, and the private key never travels anywhere. That single difference is the whole story. A password is a shared secret you type, so it can be phished, guessed, reused, or stolen in a breach somewhere else. A passkey is never typed and never shared, so none of those attacks work against it.
What is a passkey, exactly?
A passkey is a login credential built on the FIDO and WebAuthn standards, and it is created per site. When you set one up, your device generates two mathematically linked keys. The public key goes to the website, where it is useless on its own. The private key stays in the secure hardware on your device, protected by your fingerprint, face, or device PIN. Signing in means your device proves it holds the private key without ever revealing it. There is nothing for an attacker to intercept, and nothing for you to remember.
Passkeys vs passwords: what actually changes
Five things change, and they all point the same direction. Storage: a password sits in a database that can be breached, while a private key sits in your device hardware. Transmission: a password crosses the network every time you log in, while a passkey never leaves the device. Reuse: people reuse passwords across dozens of sites, while a passkey is unique to one site by design and cannot be reused anywhere else. Phishing: a password can be typed into a convincing fake login page, while a passkey is cryptographically bound to the real domain and will simply refuse to work on a lookalike. Human effort: passwords need rules, resets, and rotation, while a passkey needs the same gesture you already use to unlock your phone.
Why passkeys stop attacks that passwords cannot
Most breaches we get called about start with a credential, not with clever code. Someone reuses a work password on a personal site that gets breached. Someone types their password into a login page that looks right but is not. Someone approves a login prompt at 2am just to make it stop. Passkeys close all three doors at once, because there is no reusable secret, no page that can harvest it, and no code to approve. This is why federal guidance now singles the approach out: CISA is direct that the only widely available phishing-resistant authentication is FIDO and WebAuthn, which is exactly what a passkey is.
What are the disadvantages of passkeys?
Passkeys are better, not perfect, and it is worth being straight about the gaps. Not every business application supports them yet, so you will run both methods side by side for a while. Account recovery needs planning, because if passkeys are your only way in, a lost device becomes a lockout instead of an inconvenience. Passkeys that sync through a personal Apple, Google, or password manager account are only as protected as that account is, which is why NIST published specific guidance covering syncable authenticators. And shared logins do not fit the model well, which is usually a sign the shared login needed to become individual accounts anyway.
NIST guidance on incorporating syncable authenticators covers how synced passkeys should be handled.
What happens if you lose the device with your passkey?
Less than people fear, provided you set it up properly. Most passkeys sync through the platform account behind them, so a passkey created on your phone is already available on your laptop and restores to a replacement phone when you sign back in. The rule we give clients is simple: never let one device be the only way into an account. Register a passkey on at least two devices, or pair a passkey with a hardware security key kept somewhere safe, and make sure an administrator can re-enroll a user who genuinely loses everything.
Can you use passkeys and passwords at the same time?
Yes, and for most businesses that is the honest starting point. Adding a passkey to an account usually does not delete the password, so both keep working until you decide to turn the password off. That flexibility is useful during a rollout, but it comes with a catch worth understanding: as long as the password still works, an attacker can still target the password. You only capture the full security benefit once the fallback is removed for accounts that no longer need it, which is a decision to make deliberately rather than drift into.
How should a small business roll out passkeys?
We run this in five steps, in this order. First, inventory where your accounts actually live, which for most of our clients means Microsoft 365 plus a short list of line-of-business applications. Second, turn passkeys on for administrators before anyone else, because those are the accounts an attacker wants most. Third, enroll the rest of the team in small groups with someone available to help, since the first setup is the only confusing part. Fourth, require a second registered device or a security key for every user, so a lost phone never becomes a support emergency. Fifth, once adoption holds, start retiring password fallback on the accounts that matter most. Done this way the change lands quietly, which is the goal.
Microsoft explains what passkeys are and why they matter for account security.
See how we set up and manage multi-factor authentication.
Read why attackers target MFA prompts themselves, and how push bombing works.
Check where your logins stand with our security self-assessment.
Frequently asked questions
- What are the disadvantages of passkeys?
- Not every business application supports them yet, account recovery needs planning, and passkeys that sync through a personal account are only as safe as that account. Registering a second device solves most of it.
- Should I use passkeys instead of passwords?
- Where the option exists, yes. Passkeys cannot be phished, reused, or stolen in a breach, which removes the three ways most business account compromises actually start.
- Can I still use my password if I have a passkey?
- Usually yes. Adding a passkey does not automatically remove the password. Keeping both is fine during rollout, but the password remains an attack path until you turn it off.
- What happens to passkeys if you lose your phone?
- Most passkeys sync through your platform account and restore to a new device when you sign in. Register a passkey on a second device or a hardware key so one lost phone never locks you out.
- Are passkeys the same as multi-factor authentication?
- A passkey combines two factors already: the device you hold and the fingerprint, face, or PIN that unlocks it. It replaces the password and the second prompt rather than adding to them.
- Can a business require passkeys for all employees?
- Yes. Microsoft 365 and most major platforms let an administrator require phishing-resistant sign-in, either for everyone or starting with administrator accounts.
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