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To sign in, go to https://cloud.datum.net. The Welcome screen lists the ways you can sign in: Google, GitHub, Passkey, and Email. A Last used badge marks the method you used last in this browser.

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Sign in with a passkey

To sign in with a passkey, follow these steps:
  1. On Welcome, click Passkey.
  2. Your browser shows its passkey dialog. Choose your passkey and confirm with your fingerprint, face, or device PIN.
Datum finds your account from the passkey, so you don’t type your email address. In a browser you’ve signed in with before, the browser can offer your passkey when the page opens, and one confirmation signs you in. In a browser you haven’t used with Datum, your device can ask you to confirm twice: the first confirmation finds your account and the second signs you in.

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Use a passkey from your phone

If your passkey is on your phone and you’re signing in on another computer, follow these steps:
  1. On Welcome, click Passkey.
  2. In your browser’s passkey dialog, choose the option to use a phone, tablet, or another device. The browser shows a QR code.
  3. Scan the QR code with your phone’s camera, and confirm on your phone.
Turn on Bluetooth on both devices. Your phone uses it to check that it’s near the computer, then approves this one sign-in. The passkey stays on your phone.
To sign in on this computer without your phone next time, add a passkey on the computer. For the steps, see Add a passkey.

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Sign in with your email address

To sign in with your email address, follow these steps:
  1. On Welcome, click Email, enter your email address, and click Continue.
  2. On Choose how to sign in, click the method you want to use, such as Passkey.
If a passkey is your only sign-in method, your browser’s passkey dialog can open on its own, and you confirm with your device. Click Passkey if it doesn’t open. If your only sign-in method is a linked Google or GitHub account, Datum skips Choose how to sign in and sends you to Google or GitHub. Datum doesn’t email you a sign-in link or code.

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Sign in with Google or GitHub

On Welcome, click Google or GitHub, and sign in to that account if it asks you to. Datum signs you in to the Datum Cloud account that’s linked to it.

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Sign out

To sign out of the Cloud Portal, click your avatar or initials in the top right, and click Log Out. To sign out on other devices, go to Account Settings > Active Sessions, and click the trash icon (Revoke) next to each session you want to end. You can’t revoke the session you’re using.

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Troubleshooting sign in

If passkey sign-in fails, Datum shows one of the following messages on the sign-in screen: If you can’t use any of your passkeys, for example because you lost the device they were on, go to https://auth.datum.net/id/recover to set up a new passkey. For the steps, see Recover your account.

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What’s next

  • To add a passkey on another device or link Google or GitHub as a backup, see Manage passkeys.
  • To get back into your account when you can’t use your passkey, see Recover your account.
Last modified on October 13, 2026