Passkeys and Password Managers Are Not Rivals

The framing of "passkeys versus password managers" is tempting because it sounds like a decision. In practice the two are not competing answers to the same question. A password manager is a place to keep secrets. A passkey is a way of not having a secret to keep. Once you separate those two ideas, the choice mostly dissolves.

Start with what a password manager does. It generates long, unique passwords for each site, stores them in an encrypted vault, and fills them in when you log in. The value is uniqueness: if one site leaks, the password you used there is useless everywhere else. The weakness is structural. The password still exists, it still travels to the website when you sign in, and it can still be typed into the wrong place. A password manager raises the floor considerably, but it does not remove the secret from the transaction.

A passkey works differently. When you create one, your device generates a cryptographic key pair. The private half stays on your device, protected by your screen lock or biometrics, and the public half goes to the website. To sign in, the site sends a challenge, your device signs it, and the site verifies the signature against the public key it already holds. Nothing reusable crosses the network. As the FIDO Alliance's explanation of the shift puts it, the model moves authentication away from shared secrets entirely ^¹.

The practical consequences follow from that design. A passkey cannot be guessed, because there is no short string to guess. It cannot be reused on a lookalike site, because it is bound to the specific site it was created for, which is why passkeys blunt phishing in a way that passwords and even one-time codes do not. And a breach of a company's server yields public keys, which are not useful to an attacker. Yahoo's technology coverage makes the same point plainly: passkeys resist some phishing attempts because they only work on the sites they were made for, and they cannot be stolen by hacking into a company's database ^². That is the core argument, and it is a strong one.

Two concrete examples show where the distinction bites.

The first is a bank or an email account you sign into on a phone you carry every day. This is the ideal passkey case. You enroll once, the credential lives in the phone's secure hardware or your platform's credential store, and future logins are a face scan or a fingerprint. There is no password to phish, no code to read aloud to a caller, and no vault to unlock first. For an account that is both high-value and frequently used on a single trusted device, a passkey is close to strictly better than a password.

The second is a legacy internal tool, an older forum, or a supplier portal that has never implemented passkey support. Here a passkey is not an option at all, and a password manager is doing exactly the job it was built for: generating a strong unique password, storing it, and filling it without you memorizing anything. The same is true of the recovery codes, API tokens, license keys and PINs that accumulate around modern accounts. None of those are passkeys, and all of them need somewhere to live.

That second example is the reason the "you don't need a password manager anymore" argument overreaches. Passkey adoption is real and growing, but it is uneven. Coverage varies by platform, by browser and by service, and the long tail of accounts people actually use is not uniformly passkey-ready. The undated FIDO Alliance piece frames the direction of travel rather than a completed migration, and the practical reality for most households is a mixed estate: some accounts on passkeys, many still on passwords.

There is also a subtler point about where passkeys live. A passkey is tied to a credential store, whether that is a phone's platform keychain, a hardware security key, or a password manager that has added passkey support. That means the password manager has not been displaced so much as repositioned. It becomes the vault for the accounts that still need passwords and, increasingly, the sync layer that carries passkeys between your devices. Choosing a password manager and choosing where your passkeys are stored are now closely related decisions, not opposing ones.

The security ladder framing is useful here. Webroot's guide describes account security as levels rather than an all-or-nothing setting: a unique password from a manager is the baseline, two-factor authentication through an authenticator app adds substantial protection, and passkeys sit at the top because there is no password left to steal ^³. The same guide cites Microsoft's Digital Defense Report finding that 97% of the identity attacks it observed were password spray attacks, which is a reminder that most break-ins are opportunistic rather than clever. Each rung removes a specific step an attacker relies on.

Read that ladder as a priority order rather than a menu. The first move for any account is to stop reusing passwords, and a manager is the cheapest way to do that at scale. The second is to turn on strong second factors where passkeys are not yet available. The third is to adopt passkeys wherever a service offers them, starting with the accounts that matter most and are used most often on a device you control. Doing the third without the first leaves a lot of exposed accounts untouched.

What remains genuinely uncertain is pace. The sources establish that major platforms are pushing passkeys and that the underlying cryptography removes classes of attack that password managers cannot address. They do not establish a date by which password-only accounts disappear, and any claim that password managers are already obsolete should be treated as opinion rather than finding. The honest position is that the two tools are converging: passkeys raise the ceiling on what a login can be, and password managers remain the practical place to keep everything the ceiling does not yet cover.

The practical consequence, then, is not to pick a side. If you already use a password manager, keep it, and start enrolling passkeys on the accounts you care about most, ideally in a manager or platform store that can carry them across devices. If you have neither, a password manager is still the higher-value first step, because it fixes the reuse problem across every account at once. Passkeys are the better destination. The manager is how most people get there without leaving half their logins behind.

Sources

1. ¹ MSN: Why you simply don’t need a password manager anymore in 2026 | FIDO Alliance fidoalliance.org
2. ² Still Using Passwords? Yikes. Here's Why You Should Switch to Passkeys Now - Advertisement tech.yahoo.com
3. ³ Password security levels explained: From weak passwords to MFA and passkeys www.webroot.com