title: Using face unlock with FIDO on Android to create credentials/generate assertions
body: <p>When using the <a href="https://developers.google.com/android/reference/com/google/android/gms/fido/fido2/Fido2ApiClient#getRegisterPendingIntent(com.google.android.gms.fido.fido2.api.common.PublicKeyCredentialCreationOptions)" rel="nofollow noreferrer">getRegisterPendingIntent</a> and <a href="https://developers.google.com/android/reference/com/google/android/gms/fido/fido2/Fido2ApiClient#getSignPendingIntent(com.google.android.gms.fido.fido2.api.common.PublicKeyCredentialRequestOptions)" rel="nofollow noreferrer">getSignPendingIntent</a> APIs of the Fido2ApiClient in Android, why can't face unlock be used when creating credentials or generating assertions with credentials? Or is this possible to set in the <a href="https://developers.google.com/android/reference/com/google/android/gms/fido/fido2/api/common/PublicKeyCredentialCreationOptions" rel="nofollow noreferrer">PublicKeyCredentialCreationOptions</a> or <a href="https://developers.google.com/android/reference/com/google/android/gms/fido/fido2/api/common/PublicKeyCredentialRequestOptions" rel="nofollow noreferrer">PublicKeyCredentialRequestOptions</a>?</p>
  <p>When testing on a phone that supports both face and fingerprint unlock, I've found that I can only create FIDO credentials and generate assertions using my fingerprint or screen PIN.</p>