Passkey requirements
Passkeys require a minimum version of the operating system and of the browser.
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A passkey replaces a password: you unlock it with your fingerprint, your face or your PIN, and it gives you a strong session. Your device can keep a passkey only if its operating system and its browser are recent enough. This article lists the minimum versions, so you can check your device before you start.
What a passkey needs
To create and use a passkey, your device needs all of these:
- A supported operating system, at the minimum version in the table below.
- A supported browser, at the minimum version in the table below.
- A screen lock: a fingerprint, your face, a PIN or a device password. On Windows, this is Windows Hello.
- A place to keep the passkey: iCloud Keychain, Google Password Manager, Windows Hello, a password manager such as 1Password or Bitwarden, or a security key.
Minimum versions
| Device | Minimum operating system | Minimum browser | Where the passkey is kept |
|---|---|---|---|
| Mac | macOS 13 Ventura | Safari 16, Chrome 108, Edge 108, Firefox 122 | iCloud Keychain or Google Password Manager |
| Windows PC | Windows 10 or Windows 11 | Chrome 108, Edge 108, Firefox 122 | Windows Hello or Google Password Manager |
| iPhone and iPad | iOS and iPadOS 16 | Safari, Chrome, Edge or Firefox | iCloud Keychain |
| Android | Android 9 | Chrome 108 | Google Password Manager |
| Chromebook | ChromeOS 129 | Chrome | Google Password Manager |
| Linux | Ubuntu or another desktop distribution | Chrome 129 | Google Password Manager |
Later versions also work. To keep the passkey in Google Password Manager on a computer, use Chrome 129 or later. For the best result, keep the operating system and the browser up to date.
A password manager such as 1Password or Bitwarden can keep the passkey on every device in the table. On Linux, it is the way to use a passkey in Firefox. A security key works on every device that has a USB port or NFC.
On Windows, Windows Hello keeps the passkey only on that computer: it does not sync to your other devices. To use the same passkey on other devices, keep it in Google Password Manager or in a password manager. Microsoft stopped support for Windows 10 in October 2025. If you can, use Windows 11, version 22H2 or later.
Use the passkey of your phone on a computer
When you click Use passkey, the browser can offer to use a passkey from another device, for example an option to use a phone or tablet. The browser then shows a QR code that you scan with the camera of your phone.
This needs:
- An iPhone or iPad with iOS 16, or an Android phone with Android 9.
- Bluetooth turned on, on both the computer and the phone. The two devices must be near each other.
- On a Windows PC, Windows 11, version 23H2 or later.
This QR code is not the QR code of the Mnemonica App tab on the sign-in page. The browser shows this one, and you scan it with the camera. You scan the other one with the Mnemonica app.
If your device is too old
If you cannot update the operating system or the browser, you can still get a strong session:
- Use the Mnemonica app. On the sign-in page, click the Mnemonica App tab. Then scan the QR code with the app. The app needs iOS 15 or Android 7, not the versions in the table above. See Signing in to Mnemonica.
- Use a security key. A FIDO2 security key, for example a YubiKey, keeps the passkey itself. Your computer needs a USB port or NFC for it.
Common problems
Some apps, for example email, chat and social apps, open links in their own built-in browser. A built-in browser often cannot use passkeys. Open mnemonica.io in Safari, Chrome, Edge or Firefox. Then sign in there.
Mnemonica asks for the app when the computer cannot keep a passkey. Check the operating system and the browser against the table above. If they are older, update them. If you cannot update them, use the Mnemonica app.
Your IT department can turn off passkeys, Windows Hello or password managers on a company computer. If the passkey does not work on a managed computer, ask your IT department. In the meantime, use the Mnemonica app or a security key.
Synced passkeys are available only on devices that use the same account: the same Apple Account for iCloud Keychain, or the same Google account for Google Password Manager. Sign in to the same account on both devices. Then turn on the sync on both devices: iCloud Keychain on Apple devices, or sync in Google Password Manager.
Do you need help?
If your device meets these requirements and the passkey still does not work, write to support@mnemonica.com. Tell us the device, the operating system and the browser, with their versions.
Related articles
Signing in to Mnemonica
Sign in with an email link, Google, Apple, a passkey or the Mnemonica app, on the web and on your phone.
Basic and strong sessions
Learn what basic and strong sessions are, how you protect your first device, how you make your other sessions strong, and what to do if you lose a device.
Use your iCloud Keychain passkey in Chrome on a Mac
Let Google Chrome on your Mac use the Mnemonica passkey that you keep in iCloud Keychain.
System requirements
Check the supported browsers, screen resolution, mobile operating systems and network requirements for Mnemonica.