Setup & Usage

Install the Passkey Browser Extension, connect it by QR, and use passkeys on websites

Prerequisites

  • The SplitSecure mobile app installed and set up (see the App Installation guide)
  • Google Chrome on your computer

Install the Extension

  1. In Google Chrome, open the SplitSecure Passkey Browser Extension on the Chrome Web Store
  2. Click Add to Chrome
  3. In the confirmation dialog, click Add extension

Pin the Extension for Quick Access

The extension only handles passkeys while it’s open, so pin it to your toolbar to open it quickly:

  1. Click the Extensions (puzzle piece) icon in the Chrome toolbar
  2. Find SplitSecure Passkey Browser Extension in the list
  3. Click the pin icon next to it

The SplitSecure icon now stays in your toolbar. Click it any time to open the extension.

Connect to SplitSecure

You connect the extension by scanning a QR code with the SplitSecure mobile app. For now, this is the only supported method.

  1. Click the SplitSecure icon to open the extension and start the connection flow
  2. Open the SplitSecure app on your phone and scan the QR code
  3. Check that the identifiers on your computer and phone match, then confirm on your phone

Create a Passkey

  1. Click the SplitSecure icon to open the extension
  2. On the website, open your security or account settings and choose to add a passkey (sites word this differently: “Create a passkey”, “Set up a passkey”, or “Add a security key”)
  3. When the browser shows the passkey prompt, approve it
  4. Your approval set approves the request on their devices

The extension then creates the passkey and registers it with the site.

Sign In with a Passkey

  1. Click the SplitSecure icon to open the extension
  2. On the website, choose Sign in with a passkey
  3. Approve the request when prompted
  4. Your approval set approves the request on their devices

Once approved, you’re signed in.

Troubleshooting

Issue Possible Cause Solution
Nothing happens when a site asks for a passkey The extension was closed when the prompt appeared Open the extension first, then retry the passkey prompt
QR code won’t scan Camera permission denied or the code expired Enable camera access in your device settings, reopen the extension to refresh the QR code, then scan again
Identifiers don’t match when connecting Possible network interception, or a stale QR code Don’t confirm. Cancel on your phone and reopen the extension to scan a fresh QR code
SplitSecure isn’t offered as a passkey option Another passkey provider is handling the request, or the extension isn’t open Open the extension first; if your browser or OS shows a chooser, select SplitSecure
The site says passkeys aren’t supported The website does not offer passkey sign-in Use the site’s normal login. Passkeys only work on sites that support them

External Resources

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