Passkeys & WebCredentials

Configure the webcredentials section of your AASA file so iOS shares Passkeys and saved passwords between your iOS app and your website. Bundle ID format, Xcode capability.

WebCredentials associate your app with your domain for Passkeys and Password AutoFill. When configured, iOS can suggest credentials for your app that were saved on your website, and vice versa.

Configuration

Add your App ID in the Password AutoFill / Passkeys section under Associated Domains.

Xcode setup

Add the Associated Domains capability with webcredentials:your-domain.com.

Custom domain required Passkeys and WebCredentials require a custom domain. Configure one in Custom Domains.

Apple reference: Connecting to a Service with Passkeys